Patents by Inventor Sorin Cristoloveanu

Sorin Cristoloveanu 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: 10062681
    Abstract: A protection device for protecting an IC against electrostatic discharge includes a buried insulant layer having a thickness that is no greater than fifty nanometers with bipolar transistors arranged thereon, one of which is NPN and the other of which is PNP. A base of one merges with a collector of the other. The transistors selectively conduct a discharge current between electrodes. A first semiconductor ground plane under the buried insulant layer is capable of being electrically biased and extends underneath the base of the first bipolar transistor. The ground plane and a base of one transistor have the same doping. However, its dopant density is at least tenfold greater than that of the base.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: August 28, 2018
    Assignees: Commissariat à l'énergie atomique et aux énergies alternatives, STMicroelectronics SA, Centre National de la Recherche Scientifique
    Inventors: Yohann Solaro, Sorin Cristoloveanu, Claire Fenouillet-Beranger, Pascal Fonteneau
  • Publication number: 20170256531
    Abstract: A protection device for protecting an IC against electrostatic discharge includes a buried insulant layer having a thickness that is no greater than fifty nanometers with bipolar transistors arranged thereon, one of which is NPN and the other of which is PNP. A base of one merges with a collector of the other. The transistors selectively conduct a discharge current between electrodes. A first semiconductor ground plane under the buried insulant layer is capable of being electrically biased and extends underneath the base of the first bipolar transistor. The ground plane and a base of one transistor have the same doping. However, its dopant density is at least tenfold greater than that of the base.
    Type: Application
    Filed: May 10, 2017
    Publication date: September 7, 2017
    Inventors: Yohann Solaro, Sorin Cristoloveanu, Claire Fenouillet-Beranger, Pascal Fonteneau
  • Patent number: 9666577
    Abstract: The invention relates to an IC with an electrostatic discharge protection device. There is a buried insulant layer 50 nm or less in thickness and first and second bipolar transistors on the insulant layer, one being an npn transistor and the other a pnp transistor. The base of the first transistor is merged with the collector of the second transistor and the base of the second transistor is merged with the collector of the first transistor. The first and second bipolar transistors are configured to selectively conduct a discharge current between two electrodes of the protection device. There is a first semiconductor ground plane under the insulant layer, being electrically biased, extending until it is plumb with the base of the first bipolar transistor, exhibiting a first type of doping identical to that of the base of the first bipolar transistor with a doping density at least ten times greater.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: May 30, 2017
    Assignees: Commissariat à l'énergie atomique et aux énergies alternatives, STMicroelectronics SA, Centre National De La Recherche Scientifique
    Inventors: Yohann Solaro, Sorin Cristoloveanu, Claire Fenouillet-Beranger, Pascal Fonteneau
  • Patent number: 9276102
    Abstract: A tunnel-effect transistor the drain region of which includes a first zone doped with a doping of a first type, and a second zone doped with a doping of a second type forming a junction with the first zone.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: March 1, 2016
    Assignees: Commissariat àl'énergie atomique et aux énergies alternatives, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Cyrille Le Royer, Sorin Cristoloveanu, Jing Wan, Alexander Zaslavsky
  • Patent number: 9019760
    Abstract: A memory device is provided, including a back gate including a first portion of electrically conductive material, a first portion of dielectric material arranged on the back gate, a semiconductor nanobeam arranged on the first portion of dielectric material, a second portion of dielectric material covering the semiconductor nanobeam, a portion of material configured to receive electrons and holes, and configured to store electrical charges and covering the second portion of dielectric material, a third portion of dielectric material covering the portion of material configured to perform storage of electrical charges, and a front gate including a second portion of electrically conductive material covering the third portion of dielectric material.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: April 28, 2015
    Assignee: Commissariat a l'energie atomique et aux energies alternatives
    Inventors: Alexandre Hubert, Maryline Bawedin, Sorin Cristoloveanu, Thomas Ernst
  • Publication number: 20150061023
    Abstract: The invention relates to an IC with an electrostatic discharge protection device. There is a buried insulant layer 50 nm or less in thickness and first and second bipolar transistors on the insulant layer, one being an npn transistor and the other a pnp transistor. The base of the first transistor is merged with the collector of the second transistor and the base of the second transistor is merged with the collector of the first transistor. The first and second bipolar transistors are configured to selectively conduct a discharge current between two electrodes of the protection device. There is a first semiconductor ground plane under the insulant layer, being electrically biased, extending until it is plumb with the base of the first bipolar transistor, exhibiting a first type of doping identical to that of the base of the first bipolar transistor with a doping density at least ten times greater.
    Type: Application
    Filed: August 4, 2014
    Publication date: March 5, 2015
    Inventors: Yohann Solaro, Sorin Cristoloveanu, Claire Fenouillet-Beranger, Pascal Fonteneau
  • Patent number: 8634229
    Abstract: A memory cell is provided with a transistor which includes source and drain electrodes formed in a semiconductor film by respectively N-doped and P-doped areas. The transistor includes first and second devices for generating a potential barrier in the semiconductor film. The two potential barriers are shifted laterally and are opposed to the passage of the charge carriers emitted by the nearest source/drain electrode. One of the devices for generating the potential barrier is electrically connected to the gate. The other of the devices for generating the potential barrier is electrically connected to the counter-electrode. The writing of a high state is carried out by imposing on the P-doped electrode a potential higher than that of the N-doped electrode and charging the capacitor formed between the gate and the semiconductor film. The resetting of the memory cell is obtained by discharging the capacitor.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: January 21, 2014
    Assignees: Commissariat a l'Energie Atomique et aux Energies Alternatives, Centre National de Recherche Scientifique
    Inventors: Jing Wan, Sorin Cristoloveanu, Cyrille Le Royer, Alexander Zaslavsky
  • Publication number: 20140015009
    Abstract: A tunnel-effect transistor the drain region of which includes a first zone doped with a doping of a first type, and a second zone doped with a doping of a second type forming a junction with the first zone.
    Type: Application
    Filed: July 8, 2013
    Publication date: January 16, 2014
    Inventors: Cyrille LE ROYER, Sorin Cristoloveanu, Jing Wan, Alexander Zaslavsky
  • Patent number: 8581310
    Abstract: The transistor comprises first and second source/drain electrodes formed in a semiconductor film by N-doped and P-doped areas, respectively. A polarization voltage is applied between the two source/drain electrodes in order to impose to the P-doped electrode a potential higher than that of the N-doped electrode. The transistor comprises first and second devices for generating a potential barrier in the semiconductor film. The two potential barriers are opposed to the passage of the charge carriers emitted by the first and second source/drain electrodes, respectively. The two potential barriers are shifted with respect to an axis connecting the two source/drain electrodes. The two devices for generating a potential barrier are configured to generate a potential barrier having a variable amplitude and it are electrically connected to the gate and to the counter electrode.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: November 12, 2013
    Assignees: Commissariat a l'Energie Atomique et aux Energies Alternatives, Centre Nationale de la Recherche Scientifique
    Inventors: Jing Wan, Sorin Cristoloveanu, Cyrille Le Royer, Alexander Zaslavsky
  • Publication number: 20130069122
    Abstract: The transistor comprises first and second source/drain electrodes formed in a semiconductor film by N-doped and P-doped areas, respectively. A polarization voltage is applied between the two source/drain electrodes in order to impose to the P-doped electrode a potential higher than that of the N-doped electrode. The transistor comprises first and second devices for generating a potential barrier in the semiconductor film. The two potential barriers are opposed to the passage of the charge carriers emitted by the first and second source/drain electrodes, respectively. The two potential barriers are shifted with respect to an axis connecting the two source/drain electrodes. The two devices for generating a potential barrier are configured to generate a potential barrier having a variable amplitude and it are electrically connected to the gate and to the counter electrode.
    Type: Application
    Filed: September 12, 2012
    Publication date: March 21, 2013
    Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Jing WAN, Sorin CRISTOLOVEANU, Cyrille LE ROYER, Alexander ZASLAVSKY
  • Publication number: 20120134206
    Abstract: A memory device comprising: a back gate including a first portion of electrically conductive material, a first portion of dielectric material arranged on the back gate, a semiconductor nanobeam arranged on the first portion of dielectric material, a second portion of dielectric material covering the semiconductor nanobeam, a portion of material capable of receiving electrons and holes, and able to perform storage of electrical charges and covering the second portion of dielectric material, a third portion of dielectric material covering the portion of material capable of performing storage of electrical charges, a front gate including a second portion of electrically conductive material covering the third portion of dielectric material.
    Type: Application
    Filed: November 25, 2011
    Publication date: May 31, 2012
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENE. ALT.
    Inventors: Alexandre Hubert, Maryline Bawedin, Sorin Cristoloveanu, Thomas Ernst
  • Patent number: 8010591
    Abstract: A differential output analog multiplier circuit utilizing four G4-FETs, each source connected to a current source. The four G4-FETs may be grouped into two pairs of two G4-FETs each, where one pair has its drains connected to a load, and the other par has its drains connected to another load. The differential output voltage is taken at the two loads. In one embodiment, for each G4-FET, the first and second junction gates are each connected together, where a first input voltage is applied to the front gates of each pair, and a second input voltage is applied to the first junction gates of each pair. Other embodiments are described and claimed.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: August 30, 2011
    Assignee: California Institute of Technology
    Inventors: Mohammad M. Mojarradi, Benjamin Blalock, Sorin Cristoloveanu, Suheng Chen, Kerem Akarvardar
  • Patent number: 7514964
    Abstract: An universal and programmable logic gate based on G4-FET technology is disclosed, leading to the design of more efficient logic circuits. A new full adder design based on the G4-FET is also presented. The G4-FET can also function as a unique router device offering coplanar crossing of signal paths that are isolated and perpendicular to one another. This has the potential of overcoming major limitations in VLSI design where complex interconnection schemes have become increasingly problematic.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: April 7, 2009
    Assignee: California Institute of Technology
    Inventors: Amir Fijany, Farrokh Vatan, Kerem Akarvardar, Benjamin Blalock, Suheng Chen, Sorin Cristoloveanu, Elzbieta Kolawa, Mohammad M. Mojarradi, Nikzad Toomarian
  • Publication number: 20080001658
    Abstract: A differential output analog multiplier circuit utilizing four G4-FETs, each source connected to a current source. The four G4-FETs may be grouped into two pairs of two G4-FETs each, where one pair has its drains connected to a load, and the other par has its drains connected to another load. The differential output voltage is taken at the two loads. In one embodiment, for each G4-FET, the first and second junction gates are each connected together, where a first input voltage is applied to the front gates of each pair, and a second input voltage is applied to the first junction gates of each pair. Other embodiments are described and claimed.
    Type: Application
    Filed: May 21, 2007
    Publication date: January 3, 2008
    Inventors: Mohammad Mojarradi, Benjamin Blalock, Sorin Cristoloveanu, Suheng Chen, Kerem Akarvardar
  • Publication number: 20070008013
    Abstract: An universal and programmable logic gate based on G4-FET technology is disclosed, leading to the design of more efficient logic circuits. A new full adder design based on the G4-FET is also presented. The G4-FET can also function as a unique router device offering coplanar crossing of signal paths that are isolated and perpendicular to one another. This has the potential of overcoming major limitations in VLSI design where complex interconnection schemes have become increasingly problematic.
    Type: Application
    Filed: March 15, 2006
    Publication date: January 11, 2007
    Inventors: Amir Fijany, Farrokh Vatan, Kerem Akarvardar, Benjamin Blalock, Suheng Chen, Sorin Cristoloveanu, Elzbieta Kolawa, Mohammad Mojarradi, Nikzad Toomarian
  • Patent number: 7158284
    Abstract: A method for non-invasively probing at least one interface property in a layered structure having at least one interface. In one embodiment, the method includes the steps of exposing the layered structure to an incident photon beam at an incident angle to produce a reflection beam, measuring intensities of the second harmonic generation signals from the reflection beam, and identifying an initial second harmonic generation intensity and a time evolution of second harmonic generation intensity from the measured second harmonic generation intensities so as to determine the at least one interface property of the layered structure.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: January 2, 2007
    Assignee: Vanderbilt University
    Inventors: Michael Lee Alles, Norman H. Tolk, Bongim Jun, Robert Pasternak, Ron Schrimpf, Sorin Cristoloveanu
  • Publication number: 20060044641
    Abstract: A method for non-invasively probing at least one interface property in a layered structure having at least one interface. In one embodiment, the method includes the steps of exposing the layered structure to an incident photon beam at an incident angle to produce a reflection beam, measuring intensities of the second harmonic generation signals from the reflection beam, and identifying an initial second harmonic generation intensity and a time evolution of second harmonic generation intensity from the measured second harmonic generation intensities so as to determine the at least one interface property of the layered structure.
    Type: Application
    Filed: December 21, 2004
    Publication date: March 2, 2006
    Applicant: Vanderbilt University
    Inventors: Michael Alles, Norman Tolk, Bongim Jun, Robert Pasternak, Ron Schrimpf, Sorin Cristoloveanu