Abstract: An IGBT transistor includes a drift region, at least one body region housed in the drift region and having a first type of conductivity, and a conduction region, which crosses the body region in a direction perpendicular to a surface of the drift region and has the first type of conductivity and a lower resistance than the body region. The conduction region includes a plurality of implant regions, arranged at respective depths from the surface of the drift region.
Type:
Grant
Filed:
January 23, 2014
Date of Patent:
January 19, 2016
Assignee:
STMICROELECTRONICS S.R.L.
Inventors:
Davide Giuseppe Patti, Giuditta Settanni
Abstract: An oscillator circuit includes first and second oscillators arranged in a series configuration between a supply voltage node and a reference voltage node. The first and second oscillators are configured to receive a synchronizing signal for controlling synchronization in frequency and phase. An electromagnetic network provided to couple the first and the second oscillators includes a transformer with a primary circuit and a secondary circuit. The primary circuit includes a first portion coupled to the first oscillator and second portion coupled to the second oscillator. The first and second portions are connected by a circuit element for reuse of current between the first and second oscillators. The oscillator circuit is fabricated as an integrated circuit device wherein the electromagnetic network is formed in metallization layers of the device. The secondary circuit generates an output power combining power provided from the first and second portions of the primary circuit.
Type:
Grant
Filed:
March 17, 2014
Date of Patent:
January 19, 2016
Assignee:
STMicroelectronics S.r.l.
Inventors:
Egidio Ragonese, Vincenzo Fiore, Nunzio Spina, Giuseppe Palmisano
Abstract: An embodiment of a method of recognizing finger detection data in a detection data map produced by a touch screen includes converting the data from the x, y, z space into a three-descriptor space including: a first coordinate representative of the number of intensity peaks in the map, a second coordinate representative of the number of nodes (i.e., pixels) absorbed under one or more of the intensity peaks. A third coordinate may be selected as the angular coefficient or slope of a piecewise-linear approximating function passing through points having the numbers of nodes absorbed under the intensity peaks ordered in decreasing order over said intensity peaks, which permits singling out finger data with respect to non-finger data over the whole of the touch screen.
Type:
Grant
Filed:
October 4, 2013
Date of Patent:
January 19, 2016
Assignee:
STMicroelectronics S.r.l.
Inventors:
Nunziata Ivana Guarneri, Alessandro Capra, Sebastiano Battiato, Giovanni Maria Farinella, Francesco Cristaldi
Abstract: A digital filter with a pipeline structure includes processing structures timed by respective clock signals. Each processing structure in turn is formed by a number of processing modules for processing input samples. A phase generator aligns the processing modules with the input samples so that each input sample is processed by a respective one of the processing modules. An up-sampling buffer and a down-sampling buffer are used when the processing structures operate at different clock frequencies (thus implementing different clock domains) so as to convert signal samples between the clock domains for processing in the processing structures.
Abstract: An IC card may include a substrate having opposing first and second surfaces, and a circuit carried by the substrate adjacent the first surface of the substrate. The substrate may include a first area defining a first sector of the substrate carrying the circuit and configured to be separated from the IC card, the first sector having a form and size based upon a first IC card format, the first area having a first line delimiting the first sector to the first IC card format. The substrate may include a second area defining a second sector around the first sector and configured to be separated from the IC card based upon a second line. The second sector may have a form and size based upon at least one of a second IC card format and a third IC card format.
Type:
Grant
Filed:
March 23, 2015
Date of Patent:
January 12, 2016
Assignee:
STMICROELECTRONICS S.R.L.
Inventors:
Giuliano Filpi, Antonio Sismundo, Raffaele Caiazzo
Abstract: A monitoring device is for the inner pressure distribution of building material in a building structure. The device may include planar sensing capacitors to be buried in contact with the building material, with each sensing capacitor including a pair of plates and a dielectric material layer therebetween adapted to undergo elastic deformation under pressure without deforming plastically. The device may also include a protection box to be buried in the building material, a dielectric material enclosed in the protection box, and connection terminals protruding from the protection box. Pairs of metal vias are buried in the dielectric material enclosed within the protection box, with each pair connecting the plates of a respective planar sensing capacitor to respective connection terminals.
Type:
Grant
Filed:
March 27, 2013
Date of Patent:
January 12, 2016
Assignee:
STMICROELECTRONICS S.R.L.
Inventors:
Giovanni Girlando, Alessandro Finocchiaro, Bruno Murari
Abstract: A sensor device for an electronic apparatus, including a sensing structure for generating a first detection signal, and a dedicated integrated circuit connected to the sensing structure for detecting a first event associated with the electronic apparatus and for generating a first interrupt signal upon detection of the first event. The dedicated integrated circuit detects the first event as a function of changes to the first detection signal over time (i.e., temporal evolution), and in particular as a function of values assumed by the first detection signal within one or more successive time windows, and of a relation between these values.
Abstract: A microelectromechanical device includes: a supporting structure; two sensing masses, movable with respect to the supporting structure according to a first axis and a respective second axis; a driving device for maintaining the sensing masses in oscillation along the first axis in phase opposition; sensing units for supplying sensing signals indicative of displacements respectively of the sensing masses according to the respective second axis; processing components for combining the sensing signals so as to: in a first sensing mode, amplify effects on the sensing signals of concordant displacements and attenuate effects of discordant displacements of the sensing masses; and in a second sensing mode, amplify effects on the sensing signals of discordant displacements and attenuate effects of concordant displacements of the sensing masses.
Abstract: An embodiment of a geiger-mode avalanche photodiode includes: a body of semiconductor material, having a first surface and a second surface; a cathode region of a first type of conductivity, which extends within the body; and an anode region of a second type of conductivity, which extends within the cathode region and faces the first surface, the anode and cathode regions defining a junction. The anode region includes at least two subregions, which extend at a distance apart within the cathode region starting from the first surface, and delimit at least one gap housing a portion of the cathode region, the maximum width of the gap and the levels of doping of the two subregions and of the cathode region being such that, by biasing the junction at a breakdown voltage, a first depleted region occupies completely the portion of the cathode region within the gap.
Abstract: An integrated capacitive-type humidity sensor formed in a semiconductor chip integrating a sensing capacitor and a reference capacitor. Each of the sensing and reference capacitors have at least a first electrode and at least a second electrode, the first and second electrodes of each of the sensing and reference capacitors being arranged at distance and mutually insulated. A hygroscopic layer extends on the sensing and reference capacitors and a conductive shielding region extends on the reference capacitor but not on the sensing capacitor.
Type:
Grant
Filed:
March 26, 2014
Date of Patent:
January 12, 2016
Assignees:
STMicroelectronics S.r.l., STMicroelectronics (Crolles 2) SAS
Abstract: A MEMS device wherein a die of semiconductor material has a first face and a second face. A diaphragm is formed in or on the die and faces the first surface. A cap is fixed to the first face of the die and has a hole forming a fluidic path connecting the diaphragm with the outside world. A closing region, for example a support, a second cap, or another die, is fixed to the second face of the die. The closing region forms, together with the die and the cap, a stop structure configured to limit movements of the suspended region in a direction perpendicular to the first face.
Type:
Grant
Filed:
June 26, 2014
Date of Patent:
January 12, 2016
Assignee:
STMicroelectronics S.r.l.
Inventors:
Dino Faralli, Paolo Ferrari, Laura Maria Castoldi
Abstract: Accumulators that operate to fully or partially remove noise from a signal, including removing noise inserted into the signal by the accumulator itself. In some embodiments, an accumulator may be operated in a sampling phase and a transfer phase each time the accumulator samples an input signal. In some such embodiments, an op-amp of an accumulation circuit of the accumulator may be auto-zeroed during some or all of the sampling phases of an accumulation period. In some embodiments in which the op-amp is auto-zeroed during some or all of the sampling phases, the accumulation circuit may include a holding capacitor that, during an auto-zeroing process, holds a value output by the op-amp during a prior transfer phase. Including such a holding capacitor in an accumulator may reduce a voltage that the op-amp output rises following the auto-zero process, which may reduce a bandwidth and noise of the accumulation circuit.
Type:
Grant
Filed:
March 29, 2013
Date of Patent:
January 12, 2016
Assignees:
STMicroelectronics Asia Pacific Pte Ltd, STMicroelectronics S.r.l.
Inventors:
Paolo Angelini, Yannick Guedon, Ming Zi Zhu
Abstract: A gyroscope includes a body, a driving mass, which is mobile according to a driving axis, and a sensing mass, which is driven by the driving mass and is mobile according to a sensing axis, in response to rotations of the body. A driving device forms a microelectromechanical control loop with the body and the driving mass and maintains the driving mass in oscillation with a driving frequency. The driving device comprises a frequency detector, which supplies a clock signal at the frequency of oscillation of the driving mass, and a synchronization stage, which applies a calibrated phase shift to the clock signal so as to compensate a phase shift caused by components of the loop that are set between the driving mass and the control node.
Type:
Grant
Filed:
May 3, 2013
Date of Patent:
January 12, 2016
Assignee:
STMicroelectronics S.r.l.
Inventors:
Luciano Prandi, Carlo Caminada, Alessandra Maria Rizzo Piazza Roncoroni
Abstract: An electronic device is attached to a first surface of a board which includes vias. A heat sink precursor for the electronic device is attached to the second surface of the electronic board. The heat sink precursor includes a cavity facing the vias. A wave of solder paste is applied to the second surface. The solder paste penetrates into the cavity of the heat sink precursor and flows by capillary action through the vias to weld a thermal radiator and/or electronic contact of the electronic device to the vias. The solder paste further remains in the cavity to form a corresponding heat sink.
Type:
Grant
Filed:
March 26, 2014
Date of Patent:
January 12, 2016
Assignee:
STMicroelectronics S.r.l.
Inventors:
Cristiano Gianluca Stella, Rosalba Cacciola, Giuseppe Luigi Malgioglio
Abstract: A Class-G amplifier including a first and second driving transistor configured to receive an input voltage; a first supplying terminal connected to the first driving transistor to supply a first supplying voltage. The amplifier also comprises: a second supplying terminal connected to the second driving transistor to supply a second supplying voltage in absolute value higher than said first voltage; a first power transistor connected to the first driving transistor to form a first Sziklai pair structured to be activated by a first input voltage lower in absolute value than the first supplying voltage; a second power transistor connected to the second driving transistor to form a second Sziklai pair structured to be activated by an input signal comprised between the first supplying voltage and the second supplying voltage.
Abstract: A transceiver is connectable to a cable with at least three wires. The transceiver may include a controlled output stage including a high-side leg, having two P-type transistors coupled in series and having a common current terminal, coupled between an output pin and a positive supply pin. The P-type transistors have body regions coupled to the common current terminal of the high-side leg. A low-side leg, includes two N-type transistors coupled in series and having a common current terminal, coupled between the output pin and a negative supply pin. The N-type transistors have body regions coupled to the common current terminal of the low-side leg. The protection circuit also includes a voltage clamper coupled between the common current terminals.
Type:
Grant
Filed:
June 17, 2014
Date of Patent:
January 12, 2016
Assignee:
STMICROELECTRONICS S.R.L.
Inventors:
Salvatore Cassata, Francesco Pulvirenti, Salvatore Giuseppe Privitera
Abstract: An electronic device includes a chip and a support element which supports the chip. Leads are provided to be electrically coupled to at least one terminal of the chip. A coupling element is mounted to a free region of the support element that is not occupied by the chip. The coupling element includes a conductive portion electrically connected to at least one lead and to the at least one terminal of the chip to obtain an electrical coupling.
Abstract: A gas measurement device measures gas using a gas sensor including a sense resistance exposed to the gas and a reference resistance not exposed to the gas. The gas measurement device applies a first current value and a second current value to the sensor. A detector functions to detect a first resistance variation and a second resistance variation of the sense resistance exposed to the gas with respect to the reference resistance as a function of the first current value and the second current value, respectively. The resistance variation dependent on relative humidity is then determined as a function of the first and second resistance variations and a first constant. The resistance variation dependent on gas content is then determined as a function of the first and second resistance variations and a second (different) constant.
Type:
Application
Filed:
June 1, 2015
Publication date:
January 7, 2016
Applicant:
STMICROELECTRONICS S.R.L.
Inventors:
Pasquale Biancolillo, Angelo Recchia, Pasquale Franco, Antonio Cicero, Giuseppe Bruno
Abstract: A wireless communication network includes an access point and a plurality of stations. The access point sends towards the stations periodic information arranged in time frames or beacon intervals. The stations in the network are configured to in a first mode through the access point, and in a second mode directly with each other. The time frames are partitioned into a first time interval wherein the stations communicate in the first mode over a first channel; a second time interval wherein the stations communicate in the second mode over a second channel, and a third time interval wherein the stations communicate in either of the first or the second mode.
Type:
Grant
Filed:
July 19, 2006
Date of Patent:
January 5, 2016
Assignee:
STMICROELECTRONICS S.R.L.
Inventors:
Gabriella Convertino, Carlo Parata, Vincenzo Scarpa
Abstract: A driving mass of an integrated microelectromechanical structure is moved with a rotary motion about an axis of rotation, and a sensing mass is connected to the driving mass via elastic supporting elements so as to perform a detection movement in the presence of an external stress. The driving mass is anchored to a first anchorage arranged along the axis of rotation by first elastic anchorage elements. The driving mass is also coupled to a pair of further anchorages positioned externally thereof and coupled to opposite sides with respect to the first anchorage by further elastic anchorage elements; the elastic supporting elements and the first and further elastic anchorage elements render the driving mass fixed to the first sensing mass in the rotary motion, and substantially decoupled from the sensing mass in the detection movement, the detection movement being a rotation about an axis lying in a plane.
Type:
Grant
Filed:
October 24, 2013
Date of Patent:
January 19, 2016
Assignee:
STMicroelectronics S.r.l.
Inventors:
Luca Coronato, Alessandro Balzelli Ludovico, Sarah Zerbini