Patents by Inventor Ratibor Radojcic

Ratibor Radojcic 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: 8691707
    Abstract: A voltage-switchable dielectric layer may be employed on a die for electrostatic discharge (ESD) protection. The voltage-switchable dielectric layer functions as a dielectric layer between terminals of the die during normal operation of the die. When ESD events occur at the terminals of the die, a high voltage between the terminals switches the voltage-switchable dielectric layer into a conducting layer to allow current to discharge to a ground terminal of the die without the current passing through circuitry of the die. Thus, damage to the circuitry of the die is reduced or prevented during ESD events on dies with the voltage-switchable dielectric layer. The voltage-switchable dielectric layer may be deposited on the back side of a die for protection during stacking with a second die to form a stacked IC. A method includes depositing a voltage-switchable dielectric layer on a first die between a first terminal and a second terminal.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: April 8, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Shiqun Gu, Ratibor Radojcic, Yiming Li
  • Patent number: 8633562
    Abstract: A voltage-switchable dielectric layer may be employed on a die for electrostatic discharge (ESD) protection. The voltage-switchable dielectric layer functions as a dielectric layer between terminals of the die during normal operation of the die. When ESD events occur at the terminals of the die, a high voltage between the terminals switches the voltage-switchable dielectric layer into a conducting layer to allow current to discharge to a ground terminal of the die without the current passing through circuitry of the die. Thus, damage to the circuitry of the die is reduced or prevented during ESD events on dies with the voltage-switchable dielectric layer. The voltage-switchable dielectric layer may be deposited on the back side of a die for protection during stacking with a second die to form a stacked IC.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: January 21, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Shiqun Gu, Ratibor Radojcic, Yiming Li
  • Publication number: 20130316526
    Abstract: A voltage-switchable dielectric layer may be employed on a die for electrostatic discharge (ESD) protection. The voltage-switchable dielectric layer functions as a dielectric layer between terminals of the die during normal operation of the die. When ESD events occur at the terminals of the die, a high voltage between the terminals switches the voltage-switchable dielectric layer into a conducting layer to allow current to discharge to a ground terminal of the die without the current passing through circuitry of the die. Thus, damage to the circuitry of the die is reduced or prevented during ESD events on dies with the voltage-switchable dielectric layer. The voltage-switchable dielectric layer may be deposited on the back side of a die for protection during stacking with a second die to form a stacked IC. A method includes depositing a voltage-switchable dielectric layer on a first die between a first terminal and a second terminal.
    Type: Application
    Filed: August 1, 2013
    Publication date: November 28, 2013
    Applicant: QUALCOMM Incorporated
    Inventors: Shiqun Gu, Ratibor Radojcic, Yiming Li
  • Publication number: 20130270721
    Abstract: An apparatus has external and/or internal capacitive thermal material for enhanced thermal package management. The apparatus includes an integrated circuit (IC) package having a heat generating device. The apparatus also includes a heat spreader having a first side that is attached to the IC package. The apparatus also includes capacitive thermal material reservoirs contacting the first side of the heat spreader. The capacitive thermal material reservoirs may be disposed laterally relative to the heat generating device.
    Type: Application
    Filed: April 17, 2012
    Publication date: October 17, 2013
    Applicant: QUALCOMM Incorporated
    Inventors: Victor A. Chiriac, Durodami J. Lisk, Ratibor Radojcic
  • Publication number: 20120248582
    Abstract: A voltage-switchable dielectric layer may be employed on a die for electrostatic discharge (ESD) protection. The voltage-switchable dielectric layer functions as a dielectric layer between terminals of the die during normal operation of the die. When ESD events occur at the terminals of the die, a high voltage between the terminals switches the voltage-switchable dielectric layer into a conducting layer to allow current to discharge to a ground terminal of the die without the current passing through circuitry of the die. Thus, damage to the circuitry of the die is reduced or prevented during ESD events on dies with the voltage-switchable dielectric layer. The voltage-switchable dielectric layer may be deposited on the back side of a die for protection during stacking with a second die to form a stacked IC.
    Type: Application
    Filed: April 1, 2011
    Publication date: October 4, 2012
    Applicant: QUALCOMM INCORPORATED
    Inventors: Shiqun Gu, Ratibor Radojcic, Yiming Li
  • Patent number: 8076762
    Abstract: A packaged semiconductor product includes a packaging substrate coupled to a semiconductor die through an interconnect structure with elements of variable features. The interconnect structure may be bumps or pillars. The variable features of the interconnect structure induce a reverse bend on the semiconductor die that mitigates warpage of the semiconductor die during semiconductor assembly by balancing bending of the packaging substrate during reflow. The variable features can be variable height and/or variable composition.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: December 13, 2011
    Assignee: QUALCOMM Incorporated
    Inventors: Arvind Chandrasekaran, Ratibor Radojcic
  • Publication number: 20110115064
    Abstract: A hybrid interconnect includes a through silicon via and a wire bond. Hybrid interconnects enable better layout of a stacked IC by combining benefits from both interconnect technologies. In one hybrid interconnect, wire bonds couples a second tier die mounted on a first tier die to a redistribution layer in the first tier die. Through silicon vias in the first tier die are coupled to the wire bonds to provide communication. In another hybrid interconnect, a wire bond couples a redistribution layer on a first tier die to a packaging substrate on which the first tier die is mounted. The redistribution layer couples to a second tier die mounted on the first tier die to provide a power supply to the second tier die. Through silicon vias in the first tier die couple to the second tier die to provide communication from the packaging substrate to the second tier die.
    Type: Application
    Filed: November 18, 2009
    Publication date: May 19, 2011
    Applicant: QUALCOMM INCORPORATED
    Inventors: Ratibor Radojcic, Arvind Chandrasekaran, Ryan Lane
  • Publication number: 20110037156
    Abstract: A packaged semiconductor product includes a packaging substrate coupled to a semiconductor die through an interconnect structure with elements of variable features. The interconnect structure may be bumps or pillars. The variable features of the interconnect structure induce a reverse bend on the semiconductor die that mitigates warpage of the semiconductor die during semiconductor assembly by balancing bending of the packaging substrate during reflow. The variable features can be variable height and/or variable composition.
    Type: Application
    Filed: August 13, 2009
    Publication date: February 17, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Arvind Chandrasekaran, Ratibor Radojcic
  • Patent number: 7487474
    Abstract: An integrated circuit is designed to improve yield when manufacturing the integrated circuit, by obtaining a design element from a set of design elements used in designing integrated circuits. A variant design element is created based on the obtained design element, where a feature of the obtained design element is modified to create the variant design element. A yield to area ratio for the variant design element is determined. If the yield to area ratio of the variant design element is greater than a yield to area ratio of the obtained design element, the variant design element is retained to be used in designing the integrated circuit.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: February 3, 2009
    Assignee: PDF Solutions, Inc.
    Inventors: Dennis Ciplickas, Joe Davis, Christopher Hess, Sherry Lee, Enrico Malavasi, Abdulmobeen Mohammad, Ratibor Radojcic, Brian Stine, Rakesh Vallishayee, Stefano Zanella, Nicola Dragone, Carlo Guardiani, Michel Quarantelli, Stefano Tonello, Joshi Aniruddha
  • Publication number: 20060101355
    Abstract: An integrated circuit is designed to improve yield when manufacturing the integrated circuit, by obtaining a design element from a set of design elements used in designing integrated circuits. A variant design element is created based on the obtained design element, where a feature of the obtained design element is modified to create the variant design element. A yield to area ratio for the variant design element is determined.
    Type: Application
    Filed: November 17, 2003
    Publication date: May 11, 2006
    Applicant: PDF Solutions, Inc.
    Inventors: Dennis Ciplickas, Joe Davis, Christopher Hess, Sherry Lee, Enrico Malavasi, Abdulmobeen Mohammad, Ratibor Radojcic, Brian Stine, Rakesh Vallishayee, Stefano Zanella, Nicola Dragone, Carlo Guardiani, Michel Quarantelli, Stefano Tonello, Joshi Aniruddha