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).

  • Patent number: 8904324
    Abstract: A parameterized cell for planar and finFET designs is provided. A parameterized cell (Pcell) describing a planar design is integrated with fin-based design criteria, including fin pitch. For material regions in a planar design that have a corresponding region in a fin design, a quantized value based on the fin pitch is computed. The material can include regions such as active area silicon, contact regions, and local interconnect regions.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 2, 2014
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Navneet Jain, Paul D. Mesa, Qinglei Wang, Qi Xiang, Mahbub Rashed
  • Publication number: 20140346662
    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: Application
    Filed: May 24, 2013
    Publication date: November 27, 2014
    Applicant: GLOBALFOUNDRIES INC.
    Inventors: Mahbub RASHED, Lei YUAN
  • Publication number: 20140339647
    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: May 14, 2013
    Publication date: November 20, 2014
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Mahbub Rashed, Juhan Kim, Yunfei Deng, Suresh Venkatesan
  • Publication number: 20140339610
    Abstract: Embodiments of the present invention provide a novel method and structure for forming finFET structures that comprise standard cells. An H-shaped cut mask is used to reduce the number of fins that need to be removed, hence increasing the fin efficiency.
    Type: Application
    Filed: May 14, 2013
    Publication date: November 20, 2014
    Applicant: GLOBALFOUNDRIES INC.
    Inventors: Mahbub Rashed, Juhan Kim, Yunfei Deng, Jongwook Kye, Suresh Venkatesan
  • Publication number: 20140332967
    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: Application
    Filed: July 22, 2014
    Publication date: November 13, 2014
    Inventors: Juhan KIM, Mahbub RASHED
  • Patent number: 8881083
    Abstract: A design methodology for routing for an integrated circuit is disclosed. The method includes placement of cells having double diffusion breaks, which create an extended intercell region. Metal layer prohibit zones are defined to prohibit any M1 structures in the prohibit zones. Metal layer allow zones are placed adjacent to outer metal lines, and jogs are formed in the metal layer allow zones. Vias and viabars may then be applied on the jogs.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: November 4, 2014
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Yunfei Deng, Lei Yuan, Hidekazu Yoshida, Juhan Kim, Mahbub Rashed, Jongwook Kye
  • Patent number: 8859416
    Abstract: A computer-readable software product is provided for executing a method of determining the location of a plurality of power rail vias in a semiconductor device. The semiconductor device includes an active region and a power rail. Locations of a first via and a second via are assigned along the power rail. The spacing between the location of the first via and the location of the second via is a minimum spacing allowable. The spacing between the location of the second via and the locations of structures in the active region which may electrically interfere with the second via is determined. The location of the second via is changed in response to the spacing between the location of the second via and the location of one of the structures in the active region being less than a predetermined distance.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: October 14, 2014
    Assignee: GLOBALFOUNDRIES, Inc.
    Inventors: David S. Doman, Mahbub Rashed, Marc Tarrabia
  • Publication number: 20140258960
    Abstract: An approach and apparatus are provided for optimizing and combining different semiconductor technologies into a single graphic data system. Embodiments include generating a planar semiconductor layout design, generating a three-dimensional (e.g., FinFET) semiconductor layout design, and combining the planar design and the FinFET design in a common graphic data system.
    Type: Application
    Filed: March 11, 2013
    Publication date: September 11, 2014
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Navneet Jain, Yunfei Deng, Mahbub Rashed, David Doman, Qi Xiang, Jongwook Kye
  • Patent number: 8823178
    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: September 14, 2012
    Date of Patent: September 2, 2014
    Assignee: GlobalFoundries Inc.
    Inventors: Juhan Kim, Mahbub Rashed
  • Patent number: 8789000
    Abstract: A system and design methodology for performing routing in an integrated circuit design is disclosed. An integrated circuit design is first created using standard cells having metal level 2 (M2) power rails. Routing is performed and power rail current density for the integrated circuit is computed. Standard cells that have power rail current density below a predetermined threshold are replaced with a functionally equivalent standard cell that does not have M2 power rails, and the routing operation is performed again, until the design converges.
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: July 22, 2014
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Mahbub Rashed, Lei Yuan, Jongwook Kye, Suresh Venkatesan
  • Publication number: 20140183638
    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: Application
    Filed: December 28, 2012
    Publication date: July 3, 2014
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Mahbub RASHED, Srikanth Samavedam, David Doman, Navneet Jain, Subramani Kengeri, Suresh Venkatesan
  • Patent number: 8741763
    Abstract: An approach for providing layout designs with via routing structures is disclosed. Embodiments include: providing a gate structure and a diffusion contact on a substrate; providing a gate contact on the gate structure; providing a metal routing structure that does not overlie a portion of the gate contact, the diffusion contact, or a combination thereof; and providing a via routing structure over the portion and under a part of the metal routing structure to couple the gate contact, the diffusion contact, or a combination thereof to the metal routing structure.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: June 3, 2014
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Yuansheng Ma, Jongwook Kye, Harry Levinson, Hidekazu Yoshida, Mahbub Rashed
  • Patent number: 8735050
    Abstract: Integrated circuits and methods for fabricating integrated circuits are provided. One method includes creating a master pattern layout including first and second adjacent cells. The first adjacent cell has a first border pin with a first routing line. The second adjacent cell has a second border pin with a second routing line. The first and second routing lines overlap to define an edge-edge stitch to couple the first and second border pins. The master pattern layout is decomposed into sub-patterns.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: May 27, 2014
    Assignee: GLOBALFOUNDRIES, Inc.
    Inventors: Lei Yuan, Hidekazu Yoshida, Jongwook Kye, Qi Xiang, Mahbub Rashed
  • Publication number: 20140131816
    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: Application
    Filed: January 22, 2014
    Publication date: May 15, 2014
    Applicant: GLOBALFOUNDERS Inc.
    Inventors: Yan WANG, Yuansheng MA, Jongwook KYE, Mahbub RASHED
  • Publication number: 20140097892
    Abstract: A method for enabling functionality in circuit designs utilizing colorless DPT M1 route placement that maintains high routing efficiency and guarantees M1 decomposability of a target pattern and the resulting circuit are disclosed. Embodiments include: determining a boundary abutting first and second cells in an IC; determining a side of a first edge pin in the first cell facing a side of a second edge pin in the second cell; determining a first vertical segment of at least a portion of the side of the first edge pin and a second vertical segment of at least a portion of the side of the second edge pin; designating an area between the first vertical segment and the boundary as a first portion of a routing zone; and designating an area between the second vertical segment and the boundary as a second portion of the routing zone.
    Type: Application
    Filed: October 8, 2012
    Publication date: April 10, 2014
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Lei Yuan, Jongwook Kye, Mahbub Rashed, Qinglei Wang
  • Patent number: 8689154
    Abstract: An approach for providing timing-closed FinFET designs from planar designs is disclosed. Embodiments include: receiving one or more planar cells associated with a planar design; generating an initial FinFET design corresponding to the planar design based on the planar cells and a FinFET model; and processing the initial FinFET design to provide a timing-closed FinFET design. Other embodiments include: determining a race condition associated with a path of the initial FinFET design based on a timing analysis of the initial FinFET design; and increasing delay associated with the path to resolve hold violations associated with the race condition, wherein the processing of the initial FinFET design is based on the delay increase.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: April 1, 2014
    Assignee: GlobalFoundries Inc.
    Inventors: Mahbub Rashed, David Doman, Dinesh Somasekhar, Yan Wang, Yunfei Deng, Navneet Jain, Jongwook Kye, Ali Keshavarzi, Subramani Kengeri, Suresh Venkatesan
  • Patent number: 8679911
    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: May 7, 2012
    Date of Patent: March 25, 2014
    Assignee: GlobalFoundries Inc.
    Inventors: Yan Wang, Yuansheng Ma, Jongwook Kye, Mahbub Rashed
  • Publication number: 20140077380
    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: Application
    Filed: September 14, 2012
    Publication date: March 20, 2014
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Juhan Kim, Mahbub Rashed
  • Patent number: 8677291
    Abstract: A method for enabling functionality in circuit designs utilizing colorless DPT M1 route placement that maintains high routing efficiency and guarantees M1 decomposability of a target pattern and the resulting circuit are disclosed. Embodiments include: determining a boundary abutting first and second cells in an IC; determining a side of a first edge pin in the first cell facing a side of a second edge pin in the second cell; determining a first vertical segment of at least a portion of the side of the first edge pin and a second vertical segment of at least a portion of the side of the second edge pin; designating an area between the first vertical segment and the boundary as a first portion of a routing zone; and designating an area between the second vertical segment and the boundary as a second portion of the routing zone.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: March 18, 2014
    Assignee: GlobalFoundries Inc.
    Inventors: Lei Yuan, Jongwook Kye, Mahbub Rashed, Qinglei Wang
  • Publication number: 20140042641
    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: August 7, 2012
    Publication date: February 13, 2014
    Applicant: 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