Patents by Inventor Mahbub Rashed

Mahbub Rashed 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: 20160225763
    Abstract: Methods for abutting two cells with different sized diffusion regions and the resulting devices are provided. Embodiments include abutting a first cell having first drain and source diffusion regions and a second cell having second drain and source diffusion regions, larger than the first diffusion regions, by: forming a dummy gate at a boundary between the two cells; forming a continuous drain diffusion region having an upper portion crossing the dummy gate and encompassing the entire first drain diffusion region and part of the second drain diffusion region and having a lower portion beginning over the dummy gate and encompassing a remainder of the second drain diffusion region; forming a continuous source diffusion region that is the mirror image of the continuous drain diffusion region; and forming a poly-cut mask over the dummy gate between, but separated from, the continuous drain and source diffusion regions.
    Type: Application
    Filed: March 8, 2016
    Publication date: August 4, 2016
    Inventors: Navneet JAIN, Juhan KIM, Andy NGUYEN, Mahbub RASHED
  • Patent number: 9391080
    Abstract: An approach for providing SRAM bit cells with miniaturized bit cells, without local interconnection layers, with improved lithographic printability, and enabling methodology are disclosed. Embodiments include providing first color structures, in a M1 layer, including a first word line, a first bit line, a second bit line, a first ground line, a second ground line, a second latch line or a combination thereof, wherein the first color structures include side edges longer than tip edges; providing second color structures, in the M1 layer, including a second word line, a first power line, a second power line, a first latch line or a combination thereof, wherein the second color structures include side edges longer than tip edges; and forming a bit cell including the first color structures and the second color structures, wherein adjacent tip edges include a first color structure tip edge and a second color structure tip edge.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: July 12, 2016
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Juhan Kim, Mahbub Rashed
  • Patent number: 9355910
    Abstract: A semiconductor device is provided for implementing at least one logic element. The semiconductor device includes a semiconductor substrate with a first transistor and a second transistor formed on the semiconductor substrate. Each of the transistors comprises a source, a drain, and a gate. A trench silicide layer electrically connects one of the source or the drain of the first transistor to one of the source or the drain of the second transistor.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: May 31, 2016
    Assignee: GLOBALFOUNDRIES, INC.
    Inventors: Mahbub Rashed, Irene Y. Lin, Steven Soss, Jeff Kim, Chinh Nguyen, Marc Tarabbia, Scott Johnson, Subramani Kengeri, Suresh Venkatesan
  • Patent number: 9337099
    Abstract: Methods for abutting two cells with different sized diffusion regions and the resulting devices are provided. Embodiments include abutting a first cell having first drain and source diffusion regions and a second cell having second drain and source diffusion regions, larger than the first diffusion regions, by: forming a dummy gate at a boundary between the two cells; forming a continuous drain diffusion region having an upper portion crossing the dummy gate and encompassing the entire first drain diffusion region and part of the second drain diffusion region and having a lower portion beginning over the dummy gate and encompassing a remainder of the second drain diffusion region; forming a continuous source diffusion region that is the mirror image of the continuous drain diffusion region; and forming a poly-cut mask over the dummy gate between, but separated from, the continuous drain and source diffusion regions.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: May 10, 2016
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Navneet Jain, Juhan Kim, Andy Nguyen, Mahbub Rashed
  • Publication number: 20160117432
    Abstract: A method and apparatus for an assisted metal routing is disclosed. Embodiments may include: determining an initial block mask having a first inner vertex for forming a metal routing layer of an integrated circuit (IC); adding an assistant metal portion within the metal routing layer; and determining a modified block mask based on the assistant metal portion for forming the metal routing layer.
    Type: Application
    Filed: October 24, 2014
    Publication date: April 28, 2016
    Inventors: Lei YUAN, Irene LIN, Jongwook KYE, Mahbub RASHED
  • Patent number: 9292647
    Abstract: A methodology for a modified cell architecture and the resulting devices are disclosed. Embodiments may include determining a first vertical track spacing for a plurality of first routes for an integrated circuit (IC) design, each of the plurality of first routes having a first width, determining a second vertical track spacing for a second route for the IC design, the second route having a second width, and designating a cell vertical dimension for the IC design based on the first and second vertical track spacings.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: March 22, 2016
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Lei Yuan, Mahbub Rashed, Jongwook Kye
  • Patent number: 9196548
    Abstract: Methodology enabling selectively connecting fin structures using a segmented trench salicide layer, and the resulting device are disclosed. Embodiments include: providing on a substrate at least one gate structure; providing first and second fin structures in a vertical direction intersecting with the at least one gate structure; and providing a first segment of a salicide layer, the first segment being formed along a horizontal direction and being connected with the second fin structure and separated from the first fin structure.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: November 24, 2015
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Mahbub Rashed, Srikanth Samavedam, David Doman, Navneet Jain, Subramani Kengeri, Suresh Venkatesan
  • Publication number: 20150331988
    Abstract: Embodiments described herein provide approaches for improved circuit routing using a wide-edge pin. Specifically, provided is an integrated circuit (IC) device comprising a standard cell having a first metal layer (M1) pin coupled to a second metal layer (M2) wire at a via. The M1 pin has a width greater than a width of the via sufficient to satisfy an enclosure rule for the via, while the M1 pin extends vertically past the via a distance substantially equal to or greater than zero. This layout increases the number of available pin access points within the standard cell and thus improves routing efficiency and chip size.
    Type: Application
    Filed: July 27, 2015
    Publication date: November 19, 2015
    Applicant: GLOBALFOUNDRIES INC.
    Inventors: Lei Yuan, Juhan Kim, Jongwook Kye, Mahbub Rashed
  • Publication number: 20150311122
    Abstract: Methods for forming abutting FinFET cells with a single dummy gate and continuous fins, and the resulting devices, are disclosed. Embodiments may include forming one or more continuous fins on a substrate, forming gates perpendicular to and over the one or more continuous fins to form a first FinFET cell and a second FinFET cell, and forming source and drain contact lines parallel to and between the gates, wherein a source contact line of the first FinFET cell is adjacent to a drain contact line of the second FinFET cell, and the source contact line and the drain contact line are on opposite sides of a gate.
    Type: Application
    Filed: April 28, 2014
    Publication date: October 29, 2015
    Applicant: Globalfoundries Inc.
    Inventors: Mahbub RASHED, Yunfei DENG, Juhan KIM, Jongwook KYE, Suresh VENKATESAN, Subramani KENGERI
  • Patent number: 9159724
    Abstract: An approach for providing cross-coupling-based designs using diffusion contact structures is disclosed. Embodiments include providing first and second gate structures over a substrate; providing a gate cut region across the first gate structure, the second gate structure, or a combination thereof; providing a first gate contact over the first gate structure; providing a second gate contact over the second gate structure; and providing a diffusion contact structure coupling the first gate contact to the second gate contact, the diffusion contact structure having vertices within the gate cut region.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: October 13, 2015
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Yan Wang, Yuansheng Ma, Jongwook Kye, Mahbub Rashed
  • Patent number: 9147028
    Abstract: Methods for accommodating a non-integer multiple of the M2 pitch for the cell height of a semiconductor cell and the resulting devices are disclosed. Embodiments may include forming a cell within an integrated circuit (IC) with a height of a first integer and a remainder times a track pitch of a metal track layer, and forming power rails within the metal track layer at boundaries of the cell accommodating for the remainder.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: September 29, 2015
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Mahbub Rashed, Lei Yuan
  • Patent number: 9142513
    Abstract: An approach for providing MOL constructs using diffusion contact structures is disclosed. Embodiments include: providing a first diffusion region in a substrate; providing, via a first lithography process, a first diffusion contact structure; providing, via a second lithography process, a second diffusion contact structure; and coupling the first diffusion contact structure to the first diffusion region and the second diffusion contact structure. Embodiments include: providing a second diffusion region in the substrate; providing a diffusion gap region between the first and second diffusion regions; providing the diffusion contact structure over the diffusion gap region; and coupling, via the diffusion contact structure, the first and second diffusion regions.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: September 22, 2015
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Mahbub Rashed, Yuansheng Ma, Irene Lin, Jason Stephens, Yunfei Deng, Yuan Lei, Jongwook K E, Roderick Augur, Shibly Ahmed, Subramani Kengeri, Suresh Venkatesan
  • Patent number: 9122830
    Abstract: Embodiments described herein provide approaches for improved circuit routing using a wide-edge pin. Specifically, provided is an integrated circuit (IC) device comprising a standard cell having a first metal layer (M1) pin coupled to a second metal layer (M2) wire at a via. The M1 pin has a width greater than a width of the via sufficient to satisfy an enclosure rule for the via, while the M1 pin extends vertically past the via a distance substantially equal to or greater than zero. This layout increases the number of available pin access points within the standard cell and thus improves routing efficiency and chip size.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: September 1, 2015
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Lei Yuan, Juhan Kim, Jongwook Kye, Mahbub Rashed
  • Patent number: 9105643
    Abstract: An approach for providing SRAM bit cells with double patterned metal layer structures is disclosed. Embodiments include: providing, via a first patterning process, a word line structure, a ground line structure, a power line structure, or a combination thereof; and providing, via a second patterning process, a bit line structure proximate the word line structure, the ground line structure, the power line structure, or a combination thereof. Embodiments include: providing a first landing pad as the word line structure, and a second landing pad as the ground line structure; and providing the first landing pad to have a first tip edge and a first side edge, and the second landing pad to have a second tip edge and a second side edge, wherein the first side edge faces the second side edge.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: August 11, 2015
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Juhan Kim, Mahbub Rashed
  • Publication number: 20150213184
    Abstract: A methodology for a modified cell architecture and the resulting devices are disclosed. Embodiments may include determining a first vertical track spacing for a plurality of first routes for an integrated circuit (IC) design, each of the plurality of first routes having a first width, determining a second vertical track spacing for a second route for the IC design, the second route having a second width, and designating a cell vertical dimension for the IC design based on the first and second vertical track spacings.
    Type: Application
    Filed: January 24, 2014
    Publication date: July 30, 2015
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Lei YUAN, Mahbub RASHED, Jongwook KYE
  • Publication number: 20150187702
    Abstract: An approach for providing MOL constructs using diffusion contact structures is disclosed. Embodiments include: providing a first diffusion region in a substrate; providing, via a first lithography process, a first diffusion contact structure; providing, via a second lithography process, a second diffusion contact structure; and coupling the first diffusion contact structure to the first diffusion region and the second diffusion contact structure. Embodiments include: providing a second diffusion region in the substrate; providing a diffusion gap region between the first and second diffusion regions; providing the diffusion contact structure over the diffusion gap region; and coupling, via the diffusion contact structure, the first and second diffusion regions.
    Type: Application
    Filed: March 12, 2015
    Publication date: July 2, 2015
    Inventors: Mahbub RASHED, Yuansheng MA, Irene LIN, Jason STEPHENS, Yunfei DENG, Lei YUAN, Jongwook KYE, Rod AUGUR, Shibly AHMED, Subramani KENGERI, Suresh VENKATESAN
  • Patent number: 9035679
    Abstract: Embodiments described herein provide approaches for improving a standard cell connection for circuit routing. Specifically, provided is an IC device having a plurality of cells, a first metal layer (M1) pin coupled to a contact bar extending from a first cell of the plurality of cells, and a second metal layer (M2) wire coupled to the contact bar, wherein the contact bar extends across at least one power rail. By extending the contact bar into an open area between the plurality of cells to couple the M1 pin and the M2 wire, routing efficiency and chip scaling are improved.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: May 19, 2015
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Lei Yuan, Mahbub Rashed, Irene Yuh-Ling Lin, Jongwook Kye
  • Patent number: 9026977
    Abstract: A method includes electrically connecting a plurality of cells of a standard cell library to a power rail. A contact area is deposited to connect a first active area and a second active area of a cell of a plurality cells. The first area and the second area are located on opposite sides of the rail and electrically connected to different drains. The contact area is electrically connected to the power rail using a via. The contact area is masked to remove a portion of the contact area to electrically separate the first active are from the second active area.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: May 5, 2015
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Marc Tarabbia, Norman Chen, Jian Liu, Nader Magdy Hindawy, Tuhin Guha Neogi, Mahbub Rashed, Anurag Mittal
  • Publication number: 20150108583
    Abstract: One method disclosed herein includes forming first and second transistor devices in and above adjacent active regions that are separated by an isolation region, wherein the transistors comprise a source/drain region and a shared gate structure, forming a continuous conductive line that spans across the isolation region and contacts the source/drain regions of the transistors and etching the continuous conductive line to form separated first and second unitary conductive source/drain contact structures that contact the source/drain regions of the first and second transistors, respectively.
    Type: Application
    Filed: December 22, 2014
    Publication date: April 23, 2015
    Inventors: Mahbub Rashed, Johan Kim, Yunfei Deng, Suresh Venkatesan
  • Patent number: 9006100
    Abstract: An approach for providing MOL constructs using diffusion contact structures is disclosed. Embodiments include: providing a first diffusion region in a substrate; providing, via a first lithography process, a first diffusion contact structure; providing, via a second lithography process, a second diffusion contact structure; and coupling the first diffusion contact structure to the first diffusion region and the second diffusion contact structure. Embodiments include: providing a second diffusion region in the substrate; providing a diffusion gap region between the first and second diffusion regions; providing the diffusion contact structure over the diffusion gap region; and coupling, via the diffusion contact structure, the first and second diffusion regions.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: April 14, 2015
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Mahbub Rashed, Yuansheng Ma, Irene Lin, Jason Stephens, Yunfei Deng, Yuan Lei, Jongwook Kye, Rod Augur, Shibly Ahmed, Subramani Kengeri, Suresh Venkatesan