Patents by Inventor Douglas Kemerer

Douglas Kemerer 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: 20080086706
    Abstract: A design structure. The design structure includes: a first set of FETs having a designed first Vt and a second set of FETs having a designed second Vt, the first Vt different from the second Vt; a first monitor circuit containing at least one FET of the first set of FETs and a second monitor circuit containing at least one FET of the second set of FETs; a compare circuit configured to generate a compare signal based on a performance measurement of the first monitor circuit and of the second monitor circuit; a control unit responsive to the compare signal and configured to generate a control signal regulator based on the compare signal; and an adjustable voltage regulator responsive to the control signal and configured to voltage bias wells of FETs of the second set of FETs, the value of the voltage bias applied based on the control signal.
    Type: Application
    Filed: November 16, 2007
    Publication date: April 10, 2008
    Inventors: Corey Barrows, Douglas Kemerer, Stephen Shuma, Douglas Stout, Oscar Strohacker, Mark Styduhar, Paul Zuchowski
  • Publication number: 20070176295
    Abstract: A contact via scheme with staggered contact vias to, interalia, increase current density of a resistor by mitigating electromigration and reducing the resistive heating of each contact via is disclosed. The contact via scheme increases the current density of a thin film resistor by increasing the number of current carrying contact vias and by arranging the contact vias in staggered arrangement, which redistributes the current at the ends of the resistor. Hence, the contact via scheme decreases the current density per contact via and enables a higher maximum current density for the resistor. A method and a semiconductor device are also disclosed.
    Type: Application
    Filed: February 1, 2006
    Publication date: August 2, 2007
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Anil Chinthakindi, Douglas Coolbaugh, Jason Gill, Douglas Kemerer, Tom Lee
  • Publication number: 20070162770
    Abstract: Disclosed herein is a system for controlling power supply voltage to an on-chip power distribution network. The system incorporates a programmable on-chip sensing network that can be selectively connected to the power distribution network at multiple locations. When the sensing network is selectively connected to the power distribution network at an optimal sensing point, a local voltage feedback signal from that optimal sensing point is generated and used to adjust the power supply voltage and, thus, to manage voltage distribution across the power distribution network. Additionally, the system incorporates a policy for managing the voltage distribution across the power distribution network, a means for profiling voltage drops across the power distribution network and a means for selecting the optimal sensing point based on the policy and the profile. Another embodiment of the system can further control power supply voltages to multiple power distribution networks on the same chip.
    Type: Application
    Filed: January 12, 2006
    Publication date: July 12, 2007
    Inventors: Corey Barrows, Douglas Kemerer, Douglas Sinut, Peter Twombly
  • Publication number: 20050278663
    Abstract: A method and a system for improving manufacturing productivity of an integrated circuit. The method including: (a) generating a set of physical design rules, (b) assigning a rule scoring equation to each physical design rule of the set of physical design rules; (c) checking a physical design of the integrated circuit for deviations from each design rule; (d) computing a score for each physical design rule, using the corresponding rule scoring equation assigned to each physical design rule, for which one or more deviations were found in step (c); and (e) computing a productivity score for the integrated circuit design based on the scores computed in step (d).
    Type: Application
    Filed: May 28, 2004
    Publication date: December 15, 2005
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Douglas Kemerer, Daniel Maynard, Gustavo Tellez, Lijiang Wang, Peter Wissell
  • Patent number: 6908841
    Abstract: A semiconductor device (200) having support structures (218, 226, 236) beneath wirebond regions (214) of contact pads (204) and a method of forming same. Low modulus dielectric layers (216, 222, 232) are disposed over a workpiece (212). Support structures (218, 226, 236) are formed in the low modulus dielectric layers (216, 222, 232), and support vias (224, 234) are formed between the support structures (218, 226, 236). A high modulus dielectric film (220, 230) is disposed between each low modulus dielectric layer (216, 222, 232), and a high modulus dielectric layer (256) is disposed over the top low modulus dielectric layer (232). Contact pads (204) are formed in the high modulus dielectric layer (256). Each support via (234) within the low modulus dielectric layer (232) resides directly above a support via (224) in the underlying low modulus dielectric layer (222), to form a plurality of via support stacks within the low modulus dielectric layers (216, 222, 232).
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: June 21, 2005
    Assignees: Infineon Technologies AG, International Business Machines Corporation
    Inventors: Lloyd G. Burrell, Douglas Kemerer, Henry A. Nye, III, Hans-Joachim Barth, Emmanuel F. Crabbe, David Anderson, Joseph Chan
  • Publication number: 20050050505
    Abstract: An integrated circuit chip (104) having a contact layer (136) that includes a plurality of Vdd, Vddx, ground and I/O contacts (116, 120, 124, 128) arranged in a generally radial pattern having diagonal and major axis symmetry and generally defining four quadrants. An X-Y power grid (140) is located beneath the contact layer and includes metal layers (LM?) each having a plurality of wires (68) extending in one direction. The direction of the wires alternates from one metal layer to the next adjacent metal layer. A wiring layer (IM) is interposed between the contact layer and power grid layers to provide a well-behaved electrical transition between the generally radial Vdd, Vddx and ground contacts and the rectangular X-Y power grid. The interposed wiring layer includes concentric square rings of Vdd, Vddx and ground wires (144, 148, 152) located alternatingly with one another.
    Type: Application
    Filed: August 29, 2003
    Publication date: March 3, 2005
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Thomas Bednar, Timothy Budell, Patrick Buffet, Alain Caron, James Crain, Douglas Kemerer, Donald Kent, Esmaeil Rahmati
  • Publication number: 20040058520
    Abstract: A semiconductor device (200) having support structures (218, 226, 236) beneath wirebond regions (214) of contact pads (204) and a method of forming same. Low modulus dielectric layers (216, 222, 232) are disposed over a workpiece (212). Support structures (218, 226, 236) are formed in the low modulus dielectric layers (216, 222, 232), and support vias (224, 234) are formed between the support structures (218, 226, 236). A high modulus dielectric film (220, 230) is disposed between each low modulus dielectric layer (216, 222, 232), and a high modulus dielectric layer (256) is disposed over the top low modulus dielectric layer (232). Contact pads (204) are formed in the high modulus dielectric layer (256). Each support via (234) within the low modulus dielectric layer (232) resides directly above a support via (224) in the underlying low modulus dielectric layer (222), to form a plurality of via support stacks within the low modulus dielectric layers (216, 222, 232).
    Type: Application
    Filed: September 20, 2002
    Publication date: March 25, 2004
    Inventors: Lloyd G. Burrell, Douglas Kemerer, Henry A. Nye, Hans-Joachim Barth, Emmanuel F. Crabbe, David Anderson, Joseph Chan