Patents Assigned to STMicroelectronics (Research & Development) Limted
  • Patent number: 12124815
    Abstract: A digital signal processor includes K first electronic circuits. The first inputs receive K groups of G successive coefficients of a polynomial. The polynomial are of degree N with N+1 coefficients, where K is a sub-multiple of N+1 greater than or equal to two and G is equal to (N+1)/K. The first electronic circuits are configured to simultaneously implement K respective Horner methods and deliver K output results. A second electronic circuit includes a first input configured to successively receive the output results of the first electronic circuits starting with the output result of the first electronic circuit having processed the highest rank coefficient of the coefficients. A second input is configured to receive a variable X and the second electronic circuit is configured to implement a Horner method and deliver a value of the polynomial for the variable X on the output of the second electronic circuit.
    Type: Grant
    Filed: May 18, 2022
    Date of Patent: October 22, 2024
    Assignees: STMicroelectronics (Grenoble 2) SAS, STMicroelectronics (Alps) SAS
    Inventors: Pierre Gobin, Jeremy Ribeiro De Freitas
  • Patent number: 12125532
    Abstract: In an embodiment an electrically erasable programmable readable memory includes a plurality of memory cells organised in a memory plane arranged in a matrix fashion in rows and in columns, wherein each memory cell includes a state transistor having a source region, a drain region, an injection window situated on the side of the drain, a control gate and a floating gate and an isolation transistor having a source region, a drain region and a gate; and an isolation barrier including a buried layer and at least one wall extending from the buried layer to a surface of a substrate, wherein the at least one wall is perpendicular to the buried layer, and wherein the isolating barrier forms an interior substrate surrounding at least one of the memory cells and isolating it from the remainder of the substrate.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: October 22, 2024
    Assignee: STMicroelectronics (Rousset) SAS
    Inventor: Laurent Murillo
  • Patent number: 12125533
    Abstract: In an embodiment a non-volatile memory device includes a memory plane including at least one memory area including an array of memory cells having two rows and N columns, wherein each memory cell comprises a state transistor having a control gate and a floating gate selectable by a vertical selection transistor buried in a substrate and including a buried selection gate, and wherein each column of memory cells includes a pair of twin memory cells, two selection transistors of the pair of twin memory cells having a common selection gate and a processing device configured to store in the memory area information including a succession of N bits so that, with exception of the last bit of the succession, a current bit of the succession is stored in two memory cells located on the same row and on two adjacent columns and a current bit and the following bit are respectively stored in two twin cells.
    Type: Grant
    Filed: July 12, 2022
    Date of Patent: October 22, 2024
    Assignees: STMicroelectronics (Rousset) SAS, STMicroelectronics International N. V.
    Inventors: Francesco La Rosa, Marco Bildgen
  • Patent number: 12125803
    Abstract: A leadframe has a die pad area and an outer layer of a first metal having a first oxidation potential. The leadframe is placed in contact with a solution containing a second metal having a second oxidation potential, the second oxidation potential being more negative than the first oxidation potential. Radiation energy is then applied to the die pad area of the leadframe contacted with the solution to cause a local increase in temperature of the leadframe. As a result of the temperature increase, a layer of said second metal is selectively provided at the die pad area of the leadframe by a galvanic displacement reaction. An oxidation of the outer layer of the leadframe is then performed to provide an enhancing layer which counters device package delamination.
    Type: Grant
    Filed: March 14, 2023
    Date of Patent: October 22, 2024
    Assignee: STMicroelectronics S.r.l.
    Inventor: Paolo Crema
  • Patent number: 12125808
    Abstract: An integrated circuit memory includes a state transistor having a floating gate which stores a respective data value. A device for protecting the data stored in the memory includes a capacitive structure having a first electrically-conducting body coupled to the floating gate of the state transistor, a dielectric body, and a second electrically-conducting body coupled to a ground terminal. The dielectric body is configured, if an aqueous solution is brought into contact with the dielectric body, to electrically couple the floating gate and the ground terminal so as to modify the charge on the floating gate and to lose the corresponding data. Otherwise, the dielectric body is configured to electrically isolate the floating gate and the ground terminal.
    Type: Grant
    Filed: June 7, 2023
    Date of Patent: October 22, 2024
    Assignee: STMicroelectronics (Rousset) SAS
    Inventors: Pascal Fornara, Fabrice Marinet
  • Patent number: 12125935
    Abstract: A method of making a light sensor module includes connecting a light sensing circuit to an interconnect on a substrate, and forming a cap. The cap is formed by producing a cap substrate from material opaque to light to have an opening formed therein, placing the cap substrate top-face down, dispensing a light transmissible material into the opening, compressing the light transmissible material using a hot tool to thereby cause the light transmissible material to fully flow into the opening to form at a light transmissible aperture, and placing the cap substrate into a curing environment. A bonding material is dispensed onto the substrate. The cap is picked up and placed onto the substrate positioned such that the light transmissible aperture is aligned with the light sensing circuit, with the bonding material bonding the cap to the substrate to thereby form the light sensor module.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: October 22, 2024
    Assignee: STMicroelectronics Asia Pacific Ptd Ltd
    Inventors: Jaspreet Singh Sidhu, Tat Ming Teo
  • Patent number: 12125894
    Abstract: A bipolar transistor includes a collector. The collector is formed by: a first portion of the collector which extends under an insulating trench, and a second portion of the collector which crosses through the insulating trench. The first and second portions of the collector are in physical contact.
    Type: Grant
    Filed: October 26, 2023
    Date of Patent: October 22, 2024
    Assignees: STMicroelectronics (Crolles 2) SAS, STMicroelectronics France
    Inventors: Alexis Gauthier, Pascal Chevalier
  • Publication number: 20240347495
    Abstract: A semiconductor product includes a layer of semiconductor die package molding material embedding a semiconductor die having a front surface and an array of electrically-conductive bodies such as spheres or balls around the semiconductor die. The electrically-conductive bodies have front end portions around the front surface of the semiconductor die and back end portions protruding from the layer of semiconductor die package molding material. Electrically-conductive formations are provided between the front surface of the semiconductor die and front end portions of the electrically-conductive bodies left uncovered by the package molding material. Light-permeable sealing material can be provided at electrically-conductive formations to facilitate inspecting the electrically-conductive formations via visual inspection through the light-permeable sealing material.
    Type: Application
    Filed: June 24, 2024
    Publication date: October 17, 2024
    Applicant: STMicroelectronics S.r.l.
    Inventor: Fulvio Vittorio FONTANA
  • Publication number: 20240347481
    Abstract: An integrated circuit includes a substrate, an interconnection part, and an isolating region located between the substrate and the interconnection part. A decoy structure is located within the isolating region and includes a silicided sector which is electrically isolated from the substrate.
    Type: Application
    Filed: June 25, 2024
    Publication date: October 17, 2024
    Applicant: STMicroelectronics (Rousset) SAS
    Inventors: Julien DELALLEAU, Christian RIVERO
  • Publication number: 20240345229
    Abstract: A device includes an optical integrated circuit device mounted over an upper surface of a support substrate. The optical integrated circuit device includes an optical sensor array supported by a semiconductor substrate made of a first semiconductor material. A discrete semiconductor block, made of a second semiconductor material, is mounted over an upper surface of the optical integrated circuit device adjacent the optical sensor array. The first and second semiconductor materials have substantially matched coefficients of thermal expansion. A parallelpipedal-shaped optical filter is mounted over an upper surface of the discrete semiconductor block and extends over the optical sensor array. One or more edges/corners of the parallelpipedal-shaped optical filter cantilever over the optical sensor array without any provided support.
    Type: Application
    Filed: April 11, 2023
    Publication date: October 17, 2024
    Applicant: STMicroelectronics International N.V.
    Inventors: Colin CAMPBELL, Marco ANTONELLI, Calum RITCHIE, Bhagya Prakash BANDUSENA
  • Publication number: 20240348242
    Abstract: A safety circuit for a gate driver device receives PWM driving signals, a system supply voltage, as well as first and second safety signals. The circuit includes a first logic circuit configured to propagate the PWM driving signals to produce gate driving signals if the first safety signal is de-asserted, and disable propagation of the PWM driving signals and de-assert the gate driving signals if the first safety signal is asserted. The circuit includes a second logic circuit configured to couple a power supply output node to the system supply voltage to produce a driver supply voltage if the second safety signal is de-asserted, and decouple the power supply output node from the system supply voltage if the second safety signal is asserted.
    Type: Application
    Filed: April 4, 2024
    Publication date: October 17, 2024
    Applicant: STMicroelectronics International N.V.
    Inventors: Enrico POLI, Vincenzo MARANO, Andrija FEHER, Pekka Sakari ALASAARI
  • Publication number: 20240348249
    Abstract: A power MOSFET driver circuit includes a feedback circuit configured to supply a feedback signal that signals when a gate voltage of the power MOSFET crosses a plateau value and the power MOSFET switches conduction state. The feedback circuit includes a comparator with a replica MOSFET of the power MOSFET, with scaled down dimensions, whose gate is coupled to the gate electrode of the power MOSFET. A bistable circuit has an input coupled to an output of the replica MOSFET and is configured to change a logic state of the feedback signal following the transition of the switching signal when the gate voltage of the power MOSFET crosses the plateau value and the power MOSFET switches conduction state.
    Type: Application
    Filed: April 9, 2024
    Publication date: October 17, 2024
    Applicant: STMicroelectronics S.r.l.
    Inventors: Francesco PINZIN, Alessandro BERTOLINI, Alberto CATTANI
  • Patent number: 12119735
    Abstract: Disclosed herein is a wireless power reception system that utilizes a switched capacitor DC-DC voltage converter to charge a load. Current sensing circuits described herein enable the measurement of the input current to the switched capacitor DC-DC voltage converter while being relatively insensitive to temperature variation. Voltage/current sensing circuits described herein enable the selective measurement of load voltage, high side load current, and low side load current. One of the current sensing circuits may be used together with one of the voltage/current sensing circuits in a single device, or the current sensing circuits and voltage/current sensing circuits may be used separately in different devices.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: October 15, 2024
    Assignee: STMicroelectronics Asia Pacific Pte Ltd
    Inventors: Yannick Guedon, Teerasak Lee
  • Patent number: 12117942
    Abstract: A processing system includes a communication system and a processing core configured to generate write requests. A circuit has associated a slave interface circuit configured to manage an address sub-range and selectively forward write requests addressed to a given address. Configuration data specifies whether the given address is protected/unprotected and locked/unlocked. In response to a received write request, address and data are extracted and a determination based on the configuration data is made as to whether the extracted address is protected/unprotected, and locked/unlocked. When the extracted address is unprotected or unlocked, the slave interface forwards the write request. When the extracted address is protected and locked, the slave interface generates an unlock signal in response to a comparison of the extracted address with the extracted data, with the unlock signal being asserted when the extracted data satisfy a predetermined rule with respect to the extracted address.
    Type: Grant
    Filed: February 14, 2023
    Date of Patent: October 15, 2024
    Assignees: STMicroelectronics S.r.l., STMicroelectronics France
    Inventors: Roberta Vittimani, Federico Goller, Riccardo Angrilli, Charles Aubenas
  • Patent number: 12119751
    Abstract: The present disclosure relates to a voltage source device comprising: a voltage converter for generating a supply voltage at an output node of the voltage converter based on a feedback signal provided on a feedback line; at least one switch coupled between the output node of the voltage converter and an output terminal of the voltage source device; and at least one further switch configured to selectively couple the feedback line to: the output node of the voltage converter during a first regulation mode; and to the output terminal of the voltage source device during a second regulation mode.
    Type: Grant
    Filed: June 27, 2023
    Date of Patent: October 15, 2024
    Assignee: STMicroelectronics (Grenoble 2) SAS
    Inventors: Jean Camiolo, Alexandre Pons
  • Patent number: 12117605
    Abstract: A MEMS actuator includes a main body having a central portion, couplable to a substrate, and a peripheral portion suspended over the substrate when the central portion is coupled to the substrate. The peripheral portion has a deformable structure extending around the central portion, and forming successively arranged membranes. The MEMS actuator includes bearing structures and corresponding piezoelectric actuators. The bearing structures are fixed at their top to the deformable structure and laterally delimit corresponding cavities, each having a lateral opening facing the central portion of the main body and closed at the top by a membrane. A fixed part of the membrane is fixed to the underlying bearing structure and a suspended part is laterally offset with respect to the underlying bearing structure. The piezoelectric actuators are controllable to cause deformation of the corresponding membrane and rotation of the bearing structures around the central portion of the main body.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: October 15, 2024
    Assignee: STMicroelectronics S.r.l.
    Inventors: Domenico Giusti, Massimiliano Merli
  • Patent number: 12119968
    Abstract: A device includes an analog to digital converter configured to convert voltages into a digital signal by sampling the voltages at a fixed sampling time; a first multiplier configured to multiply the digital signal with in-phase coefficients, the in-phase coefficients generated to produce a demodulated in-phase signal at a demodulation signal frequency; a first adder configured accumulate the demodulated in-phase signal to output in-phase magnitude values; a second multiplier configured to multiply the digital signal with quadrature coefficients, the quadrature coefficients generated to produce a demodulated quadrature signal at the demodulation signal frequency; and a second adder configured to accumulate the demodulated quadrature signal to output quadrature magnitude values.
    Type: Grant
    Filed: August 2, 2023
    Date of Patent: October 15, 2024
    Assignee: STMicroelectronics Asia Pacific Pte Ltd.
    Inventors: Ade Putra, Kusuma Adi Ningrat, Mythreyi Nagarajan
  • Patent number: 12118376
    Abstract: Disclosed herein is hardware for easing the process of changing the execution mode of a virtual machine and its associated resources. By adopting the hardware, it is possible to trigger a change in the execution mode in an automatic way, without software intervention, and without interfering with the execution of other virtual machines. In addition, in case an error has occurred for a virtual machine and it is detected, the hardware can be used to disable the resources associated with that virtual machine and generate notification of the completion this operation to other hardware, which will complete the reset of the virtual machine. By adopting the hardware, the execution mode change is simplified and offers configurability and flexibility for a system running multiple virtual machines.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: October 15, 2024
    Assignees: STMicroelectronics International N.V., STMicroeletronics Application GmbH
    Inventors: Deepak Baranwal, Amritanshu Anand, Roberto Colombo, Boris Vittorelli
  • Patent number: 12117608
    Abstract: A MEMS micromirror device is formed in a package including a containment body and a lid transparent to a light radiation. The package forms a cavity housing a tiltable platform having a reflecting surface. A metastructure is formed on the lid and/or on the reflecting surface and includes a plurality of diffractive optical elements.
    Type: Grant
    Filed: July 7, 2021
    Date of Patent: October 15, 2024
    Assignee: STMicroelectronics S.r.l.
    Inventors: Roberto Carminati, Nicolo' Boni, Massimiliano Merli, Enri Duqi
  • Patent number: 12119746
    Abstract: In an embodiment a circuit includes a voltage-controlled oscillator (VCO) circuit having a first node configured to receive a reference voltage, a second node configured to receive a feedback signal, which is a comparison signal, indicative of a variation of a regulated output voltage of an electronic voltage regulator with respect to the reference voltage and a third node configured to provide a clock signal having a clock period based on the reference voltage and the feedback signal, and a pulse-width modulated (PWM) signal generator circuit having a first node coupled to the VCO circuit and configured to receive the clock signal, a second node configured to receive an input signal proportional to an input voltage signal at an input node of the electronic voltage regulator and a third node configured to provide at least one PWM drive signal to one or more electronic switches of a switching stage based on the clock signal.
    Type: Grant
    Filed: June 17, 2022
    Date of Patent: October 15, 2024
    Assignee: STMicroelectronics S.r.l.
    Inventors: Marco Borghese, Mattia Carrera