Patents by Inventor Paolo Cappelletti

Paolo Cappelletti 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: 8963220
    Abstract: In some embodiments, a gate structure with a spacer on its side may be used as a mask o form self-aligned trenches in microelectronic memory, such as a flash memory. A first portion of the gate structure may be used to form the mask, together with sidewall spacers, in some embodiments. Then, after forming the shallow trench isolations, a second portion of the gate structure may be added to form a mushroom shaped gate structure.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: February 24, 2015
    Assignee: Micron Technology, Inc.
    Inventors: Alessandro Grossi, Marcello Mariani, Paolo Cappelletti
  • Patent number: 8664702
    Abstract: In some embodiments, a gate structure with a spacer on its side may be used as a mask to form self-aligned trenches in a microelectronic memory, such as a flash memory. A first portion of the gate structure may be used to form the mask, together with sidewall spacers, in some embodiments. Then, after forming the shallow trench isolations, a second portion of the gate structure may be added to form a mushroom shaped gate structure.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: March 4, 2014
    Assignee: Micron Technology, Inc.
    Inventors: Alessandro Grossi, Marcello Mariani, Paolo Cappelletti
  • Publication number: 20140027834
    Abstract: In some embodiments, a gate structure with a spacer on its side may be used as a mask o form self-aligned trenches in microelectronic memory, such as a flash memory. A first portion of the gate structure may be used to form the mask, together with sidewall spacers, in some embodiments. Then, after forming the shallow trench isolations, a second portion of the gate structure may be added to form a mushroom shaped gate structure.
    Type: Application
    Filed: October 1, 2013
    Publication date: January 30, 2014
    Applicant: Micron Technology, Inc
    Inventors: Alessandro Grossi, Marcello Mariani, Paolo Cappelletti
  • Patent number: 8546856
    Abstract: In some embodiments, a gate structure with a spacer on its side may be used as a mask to form self-aligned trenches in a microelectronic memory, such as a flash memory. A first portion of the gate structure may be used to form the mask, together with sidewall spacers, in some embodiments. Then, after forming the shallow trench isolations, a second portion of the gate structure may be added to form a mushroom shaped gate structure.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: October 1, 2013
    Assignee: Micron Technology, Inc.
    Inventors: Alessandro Grossi, Marcello Mariani, Paolo Cappelletti
  • Publication number: 20120080738
    Abstract: In some embodiments, a gate structure with a spacer on its side may be used as a mask to form self-aligned trenches in a microelectronic memory, such as a flash memory. A first portion of the gate structure may be used to form the mask, together with sidewall spacers, in some embodiments. Then, after forming the shallow trench isolations, a second portion of the gate structure may be added to form a mushroom shaped gate structure.
    Type: Application
    Filed: December 9, 2011
    Publication date: April 5, 2012
    Inventors: Alessandro Grossi, Marcello Mariani, Paolo Cappelletti
  • Patent number: 8097506
    Abstract: In some embodiments, a gate structure with a spacer on its side may be used as a mask to form self-aligned trenches in a microelectronic memory, such as a flash memory. A first portion of the gate structure may be used to form the mask, together with sidewall spacers, in some embodiments. Then, after forming the shallow trench isolations, a second portion of the gate structure may be added to form a mushroom shaped gate structure.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: January 17, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Alessandro Grossi, Marcello Mariani, Paolo Cappelletti
  • Publication number: 20100155804
    Abstract: In some embodiments, a gate structure with a spacer on its side may be used as a mask to form self-aligned trenches in a microelectronic memory, such as a flash memory. A first portion of the gate structure may be used to form the mask, together with sidewall spacers, in some embodiments. Then, after forming the shallow trench isolations, a second portion of the gate structure may be added to form a mushroom shaped gate structure.
    Type: Application
    Filed: December 22, 2008
    Publication date: June 24, 2010
    Inventors: Alessandro Grossi, Marcello Mariani, Paolo Cappelletti
  • Publication number: 20090014709
    Abstract: A process manufactures an array of cells in a body of semiconductor material wherein a common conduction region of a first conductivity type and a plurality of shared control regions, of a second conductivity type, are formed in the body. The shared control regions extend on the common conduction region and are laterally delimited by insulating regions. Then, a grid-like layer is formed on the body to delimit a first plurality of empty regions directly overlying the body and conductive regions of semiconductor material and the first conductivity type are formed by filling the first plurality of empty regions, each conductive region forming, together with the common conduction region and an own shared control region, a bipolar junction transistor.
    Type: Application
    Filed: July 8, 2008
    Publication date: January 15, 2009
    Applicant: STMICROELECTRONICS S.R.L.
    Inventors: Fabio Pellizzer, Augusto Benvenuti, Paolo Cappelletti, Roberto Bez, Agostino Pirovano
  • Patent number: 7304485
    Abstract: A test chip performs measurements to evaluate the performances of interconnects. In particular, the statistical failure distribution, the electromigration and the leakage current are measured. An algorithm detects a via failure at any of the available n metal layers. The test chip includes a ROM memory array. The vias to be measured are formed in the columns of the array. Via or contact failures are detected by forcing a predetermined current through both an array column and a reference column. The failure analysis is obtained by comparing the resulting voltage drops.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: December 4, 2007
    Assignee: STMicroelectronics S.r.l.
    Inventors: Paolo Cappelletti, Alfonso Maurelli
  • Publication number: 20070126064
    Abstract: An integrated transistor device is formed in a chip of semiconductor material having an electrical-insulation region delimiting an active area accommodating a bipolar transistor of vertical type and a MOSFET of planar type, contiguous to one another. The active area accommodates a collector region; a bipolar base region contiguous to the collector region; an emitter region within the bipolar base region; a source region, arranged at a distance from the bipolar base region; a drain region; a channel region arranged between the source region and the drain region; and a well region. The drain region and the bipolar base region are contiguous and form a common base structure shared by the bipolar transistor and the MOSFET. Thereby, the integrated transistor device has a high input impedance and is capable of driving high currents, while only requiring a small integration area.
    Type: Application
    Filed: November 27, 2006
    Publication date: June 7, 2007
    Applicant: STMicroelectronics S.r.I.
    Inventors: Fabio Pellizzer, Paolo Cappelletti
  • Publication number: 20060189136
    Abstract: A method for manufacturing electrically non-active structures for an electronic circuit integrated on a semiconductor substrate is provided, with the electronic circuit including first and second electrically active structures. The method includes inserting the electrically non-active structures in the electronic circuit to make uniform a surface above the semiconductor substrate. The inserting includes identifying, among the electrically non-active structures, a first group of electrically non-active structures to be adjacent the first and second electrically active structures, and identifying, among the electrically non-active structures, a second group of electrically non-active structures not adjacent to the first and second electrically active structures. The method further includes defining, on the semiconductor substrate, the first and second groups of electrically non-active structures through different photolithographic steps.
    Type: Application
    Filed: January 19, 2006
    Publication date: August 24, 2006
    Applicant: STMicroelectronics S.r.l.
    Inventors: Paolo Cappelletti, Alfonso Maurelli, Paola Zabberoni
  • Patent number: 7012832
    Abstract: A magnetic random access memory (MRAM) device has increased ?R/R for sensing a state of a pin-dependent tunneling (SDT) device. The MRAM device includes plural transistors connected to a read line for sensing the state of the SDT device. Plural transistors lower an underlying resistance during reading, increasing ?R/R. The plural transistors can share a source region.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: March 14, 2006
    Assignees: WEstern Digital (Fremont), Inc., STMicroelectronics, S.r.I.
    Inventors: Kyusik Sin, Matthew R. Gibbons, William D. Jensen, Hugh Craig Hiner, Xizeng Stone Shi, Roberto Bez, Giulio Casagrande, Paolo Cappelletti
  • Patent number: 6903995
    Abstract: An integrated non-volatile memory device may include a first matrix of memory cells organized into rows (or word lines) and columns (or bit lines), corresponding row and column decoding circuits, and read, modify and erase circuits for reading and modifying data stored in the memory cells. Furthermore, the memory device may also include a test structure including a second matrix of memory cells smaller than the first. The second memory matrix may include word line couplings each having a different contact to gate distance. That is, each coupling is aligned a different distance from its respective gate than adjacent couplings.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: June 7, 2005
    Assignee: STMicroelectronics S.r.l.
    Inventors: Emilio Camerlenghi, Paolo Cappelletti, Tecla Ghilardi, Mauro Sali, Giorgio Servalli
  • Patent number: 6876033
    Abstract: An electrically erasable and programmable memory cell is provided. The memory cell includes a floating gate MOS transistor and a bipolar transistor for injecting an electric charge into the floating gate. The floating gate transistor has a source region and a drain region formed in a first well with a channel defined between the drain and source regions, a control gate region, and a floating gate extending over the channel and the control gate region. The bipolar transistor has an emitter region formed in the first well, a base region consisting of the first well, and a collector region consisting of the channel. The memory cell includes a second well that is insulated from the first well, and the control gate region is formed in the second well. Further embodiments of the present invention provide a memory including at least one such memory cell, an electronic device including such a memory, and methods of integrating a memory cell and erasing a memory cell.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: April 5, 2005
    Assignee: STMicroelectronics S.r.l.
    Inventors: Paolo Cappelletti, Paolo Ghezzi, Alfonso Maurelli, Loris Vendrame, Paola Zabberoni
  • Publication number: 20050032278
    Abstract: A method for manufacturing electrically non-active structures for an electronic circuit integrated on a semiconductor substrate is provided, with the electronic circuit including first and second electrically active structures. The method includes inserting the electrically non-active structures in the electronic circuit to make uniform a surface above the semiconductor substrate. The inserting includes identifying, among the electrically non-active structures, a first group of electrically non-active structures to be adjacent the first and second electrically active structures, and identifying, among the electrically non-active structures, a second group of electrically non-active structures not adjacent to the first and second electrically active structures. The method further includes defining, on the semiconductor substrate, the first and second groups of electrically non-active structures through different photolithographic steps.
    Type: Application
    Filed: August 3, 2004
    Publication date: February 10, 2005
    Applicant: STMicroelectronics S.r.l.
    Inventors: Paolo Cappelletti, Alfonso Maurelli, Paola Zabberoni
  • Patent number: 6841445
    Abstract: A non-volatile memory cell of the type which includes at least one floating gate transistor and which is realized over a semiconductor substrate includes a source region, and a drain region, separated by a channel region which is overlaid by a thin layer of gate oxide. The gate oxide isolates a floating gate region from the substrate. The floating gate region is coupled to a control gate terminal. The floating gate region of the memory cell develops a first potential barrier between the semiconductor substrate and the gate oxide layer, and a second different potential barrier between the floating gate region and the gate oxide.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: January 11, 2005
    Assignee: SGS-Thomson Microelectronics S.r.l.
    Inventor: Paolo Cappelletti
  • Publication number: 20040268275
    Abstract: A test chip performs measurements to evaluate the performances of interconnects. In particular, the statistical failure distribution, the electromigration and the leakage current are measured. An algorithm detects a via failure at any of the available n metal layers. The test chip includes a ROM memory array. The vias to be measured are formed in the columns of the array. Via or contact failures are detected by forcing a predetermined current through both an array column and a reference column. The failure analysis is obtained by comparing the resulting voltage drops.
    Type: Application
    Filed: May 21, 2004
    Publication date: December 30, 2004
    Applicant: STMicroelectronics S.r.I.
    Inventors: Paolo Cappelletti, Alfonso Maurelli
  • Publication number: 20040173840
    Abstract: A non-volatile memory cell of the type which includes at least one floating gate transistor and which is realized over a semiconductor substrate includes a source region, and a drain region, separated by a channel region which is overlaid by a thin layer of gate oxide. The gate oxide isolates a floating gate region from the substrate. The floating gate region is coupled to a control gate terminal. The floating gate region of the memory cell develops a first potential barrier between the semiconductor substrate and the gate oxide layer, and a second different potential barrier between the floating gate region and the gate oxide.
    Type: Application
    Filed: March 3, 2004
    Publication date: September 9, 2004
    Applicant: SGS-THOMSON MICROELECTRONICS S.r.l.
    Inventor: Paolo Cappelletti
  • Publication number: 20040061168
    Abstract: An electrically erasable and programmable memory cell is provided. The memory cell includes a floating gate MOS transistor and a bipolar transistor for injecting an electric charge into the floating gate. The floating gate transistor has a source region and a drain region formed in a first well with a channel defined between the drain and source regions, a control gate region, and a floating gate extending over the channel and the control gate region. The bipolar transistor has an emitter region formed in the first well, a base region consisting of the first well, and a collector region consisting of the channel. The memory cell includes a second well that is insulated from the first well, and the control gate region is formed in the second well. Further embodiments of the present invention provide a memory including at least one such memory cell, an electronic device including such a memory, and methods of integrating a memory cell and erasing a memory cell.
    Type: Application
    Filed: June 25, 2003
    Publication date: April 1, 2004
    Applicant: STMICROELECTRONICS S.r.I
    Inventors: Paolo Cappelletti, Paolo Ghezzi, Alfonso Maurelli, Loris Vendrame, Paola Zabberoni
  • Patent number: 6710394
    Abstract: A non-volatile memory cell of the type which includes at least one floating gate transistor and which is realized over a semiconductor substrate includes a source region, and a drain region, separated by a channel region which is overlaid by a thin layer of gate oxide. The gate oxide isolates a floating gate region from the substrate. The floating gate region is coupled to a control gate terminal. The floating gate region of the memory cell develops a first potential barrier between the semiconductor substrate and the gate oxide layer, and a second different potential barrier between the floating gate region and the gate oxide.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: March 23, 2004
    Assignee: SGS-Thomson Microelectronics S.r.l.
    Inventor: Paolo Cappelletti