公开(公告)号：US20220108975A1

公开(公告)日：2022-04-07

申请号：US17492356

申请日：2021-10-01

Applicant: STMICROELECTRONICS S.r.l. ,  STMICROELECTRONICS S.r.l.

Inventor： Cristina MANOLA ,  Rosa Lucia TORRISI ,  Simone RASCUNÀ ,  Gabriele BELLOCCHI ,  Annalinda CONTINO ,  Giuseppe MACCARRONE

IPC: H01L23/00 ,  H01L23/495 ,  B22F9/24 ,  B22F1/00

Abstract: The disclosure is directed to wide band-gap semiconductor devices, such as power devices based on silicon carbide or gallium nitride materials. A power device die is attached to a carrier substrate or a base using sintered silver as a die attachment material or layer. The carrier substrate is, in some embodiments, copper plated with silver. The sintered silver die attachment layer is formed by sintering silver nanoparticle paste under a very low temperature, for example, lower than 200° C. and in some embodiments at about 150° C., and with no external pressures applied in the sintering process. The silver nanoparticle is synthesized through a chemical reduction process in an organic solvent. After the reduction process has completed, the organic solvent is removed through evaporation with a flux of inert gas being injected into the solution.

公开(公告)号：US20250060466A1

公开(公告)日：2025-02-20

申请号：US18940049

申请日：2024-11-07

Applicant: STMicroelectronics S.r.l.

Inventor： Stefano PASSI ,  Roberto Giorgio BARDELLI ,  Anna MORONI

IPC: G01S7/524 ,  G06F5/08 ,  G06F5/10 ,  G06F9/30 ,  G11C19/00

Abstract: A waveform generator includes a system control unit and signal channels controlled by the system control unit and configured to supply driving signals for driving a respective transducer of an array of transducers. Each signal channel includes a sequential access memory having rows, where each row contains an instruction word configured to generate a respective step of a waveform to be generated. A memory output of the sequential access memory is defined by an output row at a fixed location. The waveform to be generated is defined by a block of instruction words. Each signal channel also includes an internal control unit that is configured to sequentially move the content of the sequential access memory, based on the instruction word currently at the memory output, so that sequences of instruction words are provided at the output row.

公开(公告)号：US12230555B2

公开(公告)日：2025-02-18

申请号：US18395122

申请日：2023-12-22

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Cristiano Gianluca Stella ,  Fabio Vito Coppone ,  Francesco Salamone

IPC: H01L23/495 ,  H01L23/00 ,  H01L23/31

Abstract: A power device for surface mounting has a leadframe including a die-attach support and at least one first lead and one second lead. A die, of semiconductor material, is bonded to the die-attach support, and a package, of insulating material and parallelepipedal shape, surrounds the die and at least in part the die-attach support and has a package height. The first and second leads have outer portions extending outside the package, from two opposite lateral surfaces of the package. The outer portions of the leads have lead heights greater than the package height, extend throughout the height of the package, and have respective portions projecting from the first base.

公开(公告)号：US20250053807A1

公开(公告)日：2025-02-13

申请号：US18779807

申请日：2024-07-22

Applicant: STMICROELECTRONICS INTERNATIONAL N.V. ,  STMICROELECTRONICS S.R.L

Inventor： Danilo Pietro PAU ,  Surinder Pal SINGH ,  Fabrizio Maria Aymone

IPC: G06N3/08 ,  G06N5/046

Abstract: The present disclosure relates to a method of training a neural network using a circuit comprising a memory and a processing device, an exemplary method comprising: performing a first forward inference pass through the neural network based on input features to generate first activations, and generating an error based on a target value, and storing the error to the memory; and performing, for each layer of the neural network: a modulated forward inference pass; before, during or after the modulated forward inference pass, a second forward inference pass based on the input features to regenerate one or more first activations; and updating one or more weights in the neural network based on the modulated activations and the one or more regenerated first activations.

公开(公告)号：US12225824B2

公开(公告)日：2025-02-11

申请号：US17485719

申请日：2021-09-27

Applicant: STMicroelectronics S.r.l.

Inventor： Domenico Giusti ,  Irene Martini ,  Davide Assanelli ,  Paolo Ferrarini ,  Carlo Luigi Prelini ,  Fabio Quaglia

IPC: H10N30/057 ,  B81B7/02 ,  H10N30/00 ,  H10N30/30 ,  H10N30/87 ,  H10N30/20

Abstract: A piezoelectric microelectromechanical structure is provided with a piezoelectric stack having a main extension in a horizontal plane and a variable section in a plane transverse to the horizontal plane. The stack is formed by a bottom-electrode region, a piezoelectric material region arranged on the bottom-electrode region, and a top-electrode region arranged on the piezoelectric material region. The piezoelectric material region has, as a result of the variable section, a first thickness along a vertical axis transverse to the horizontal plane at a first area, and a second thickness along the same vertical axis at a second area. The second thickness is smaller than the first thickness. The structure at the first and second areas can form piezoelectric detector and a piezoelectric actuator, respectively.

公开(公告)号：US12222492B2

公开(公告)日：2025-02-11

申请号：US17487166

申请日：2021-09-28

Applicant: STMicroelectronics S.r.l.

Inventor： Nicolo' Boni ,  Roberto Carminati ,  Massimiliano Merli

IPC: G02B26/08 ,  B81B3/00

Abstract: A microelectromechanical device includes a fixed structure having a frame defining a cavity, a tiltable structure elastically suspended above the cavity with main extension in a horizontal plane, a piezoelectrically driven actuation structure which can be biased to cause a desired rotation of the tiltable structure about a first and second rotation axes, and a supporting structure integral with the fixed structure and extending in the cavity starting from the frame. Lever elements are elastically coupled to the tiltable structure at a first end by elastic suspension elements and to the supporting structure at a second end by elastic connecting elements which define a lever rotation axis. The lever elements are elastically coupled to the actuation structure so that their biasing causes the desired rotation of the tiltable structure about the first and second rotation axes.

公开(公告)号：US12216020B2

公开(公告)日：2025-02-04

申请号：US17318831

申请日：2021-05-12

Applicant: STMicroelectronics S.r.l.

Inventor： Marco Piazza ,  Antonio Canciamilla ,  Piero Orlandi ,  Luca Maggi

IPC: G01M11/00 ,  G01M11/02 ,  G01R31/317 ,  G01R31/3185 ,  G02B6/293

Abstract: A method of testing a photonic device includes providing a plurality of optical test signals at respective inputs of a first plurality of inputs of an optical input circuit located on a substrate, combining the plurality of optical test signals into a combined optical test signal at an output of the optical input circuit, transmitting the combined optical test signal through the output to an input waveguide of an optical device under test, the optical device under test being located on the substrate, and measuring a response of the optical device under test to the combined optical test signal. Each of the plurality of optical test signals comprises a respective dominant wavelength of a plurality of dominant wavelengths.

公开(公告)号：US20250040173A1

公开(公告)日：2025-01-30

申请号：US18912488

申请日：2024-10-10

Applicant: STMicroelectronics S.r.l.

Inventor： Ferdinando IUCOLANO ,  Alessandro Chini

IPC: H01L29/778 ,  H01L21/02 ,  H01L29/06 ,  H01L29/20 ,  H01L29/205 ,  H01L29/40 ,  H01L29/417 ,  H01L29/423 ,  H01L29/66

Abstract: An HEMT device, comprising: a semiconductor body including a heterojunction structure; a dielectric layer on the semiconductor body; a gate electrode; a drain electrode, facing a first side of the gate electrode; and a source electrode, facing a second side opposite to the first side of the gate electrode; an auxiliary channel layer, which extends over the heterojunction structure between the gate electrode and the drain electrode, in electrical contact with the drain electrode and at a distance from the gate electrode, and forming an additional conductive path for charge carriers that flow between the source electrode and the drain electrode.

公开(公告)号：US20250039595A1

公开(公告)日：2025-01-30

申请号：US18911119

申请日：2024-10-09

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Stefano Paolo RIVOLTA ,  Mauro BARDONE ,  Andrea LABOMBARDA

IPC: H04R1/10 ,  G06F3/044 ,  H03K17/96

Abstract: The present disclosure is directed to input detection for electronic devices using electrostatic charge sensors. The devices and methods disclosed herein utilize electrostatic charge sensors to detect various touch gestures, such as long and short touches, single/double/triple taps, and swipes; and perform in-car detection.

公开(公告)号：US12212648B2

公开(公告)日：2025-01-28

申请号：US18453018

申请日：2023-08-21

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Matteo Quartiroli ,  Paolo Rosingana

IPC: H04B7/10 ,  H04L1/02 ,  H04L7/00

Abstract: A sensor includes detection circuitry and control circuitry coupled to the detection circuitry. The detection circuitry generates a detection signal indicative of a detected physical quantity. The control circuitry, in operation receives the detection signal and a frequency-indication signal, and generates a trigger signal based on the frequency-indication signal and a set of local reference signals. The sensor generates a digital output signal and a locking signal based on the trigger signal and the detection signal. The generating the digital output signal includes outputting a sample of the digital output signal based on the trigger signal. The locking signal is temporally aligned with the digital output signal.