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公开(公告)号：US11543730B1
公开(公告)日：2023-01-03
申请号：US17471757
申请日：2021-09-10
Applicant: STMicroelectronics S.r.l.
Inventor： Antonio Fincato
IPC: G02F1/295
Abstract: An optical beam steering device and a method for beam steering are described. The optical beam steering device including: a laser source coupled to an optical phased array (OPA) The OPA includes: a beam splitter network optically coupled to the laser source and configured to split a laser beam generated by the laser source into N outputs to generate an output optical beam; a first network of first phase shifters configured to steer the output optical beam in a first direction away from a longitude direction; and a second network of second phase shifters configured to steer the output optical beam in a second direction away from the longitude direction, the second direction being opposite to the first direction.
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公开(公告)号：US11543428B2
公开(公告)日：2023-01-03
申请号：US16898350
申请日：2020-06-10
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Gabriele Gattere , Francesco Rizzini , Alessandro Tocchio
IPC: G01P15/125 , G01P15/08
Abstract: An inertial structure is elastically coupled through a first elastic structure to a supporting structure so as to move along a sensing axis as a function of a quantity to be detected. The inertial structure includes first and second inertial masses which are elastically coupled together by a second elastic structure to enable movement of the second inertial mass along the sensing axis. The first elastic structure has a lower elastic constant than the second elastic structure so that, in presence of the quantity to be detected, the inertial structure moves in a sensing direction until the first inertial mass stops against a stop structure and the second elastic mass can move further in the sensing direction. Once the quantity to be detected ends, the second inertial mass moves in a direction opposite to the sensing direction and detaches the first inertial mass from the stop structure.
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公开(公告)号：US20220417076A1
公开(公告)日：2022-12-29
申请号：US17845860
申请日：2022-06-21
Applicant: STMicroelectronics S.r.l.
Inventor： Valerio BENDOTTI , Nicola DE CAMPO , Carlo CURINA
IPC: H04L27/36 , H04L25/40 , H03K17/687 , H03K19/21 , H03K19/096
Abstract: A transmitter circuit receives a PWM input signal and a clock signal. A logic circuit generates a control signal as a function of the clock signal. The control signal is normally set to high, and is periodically set to low for a transmission time interval when an edge is detected in the clock signal. The transmission time interval is shorter than a half clock period of the clock signal. A tri-state transmitter receives the PWM input signal and the control signal, and produces first and a second output signals at first and second transmitter output nodes, respectively. The output signals have a voltage swing between a positive voltage and a reference voltage. An output control circuit is sensitive to the control signal and is coupled to the first and second transmitter output nodes.
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公开(公告)号：US20220417012A1
公开(公告)日：2022-12-29
申请号：US17839109
申请日：2022-06-13
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Ruggero SUSELLA
Abstract: Encryption of data using a cryptographic device is protected. The protecting includes generating a first output of a first branch by encrypting a constant using a key, and generating a first output of a second branch by encrypting a constant using a key. The first output of the first branch, the first output of the second branch, and a first portion of plaintext data are XORed, generating a first portion of cypher text. A second output of the first branch is generated by encrypting the first output of the first branch using a key, and a second output of the second branch is generated by encrypting the first output of the second branch using a key. The second output of the first branch, the second output of the second branch, and a second portion of plaintext data are XORed, generating a second portion of cypher text.
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公开(公告)号：US20220416743A1
公开(公告)日：2022-12-29
申请号：US17839335
申请日：2022-06-13
Applicant: STMicroelectronics S.r.l.
Inventor： Roberto MODAFFARI , Paolo PESENTI , Mario MAIORE , Tiziano CHIARILLO
Abstract: A circuit includes an amplifier, a bias voltage node, and a first set of switches configured, based on a first reset signal having a first value, to couple first and second input nodes to the bias voltage node and to couple first and second output nodes of the amplifier. First and second feedback branches each include a respective RC network including a plurality of capacitances. The first and second feedback branches further include a second set of switches intermediate input nodes and the capacitances, and a third set of switches intermediate input nodes and the plurality of capacitances. These switches selectively couple the capacitances to the input nodes and output nodes, based on a second reset signal having a first value. The second reset signal keeps the first value for a determined time interval exceeding a time interval in which the first reset signal has the first value.
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Patent Agency Ranking
公开(公告)号：US20220416657A1
公开(公告)日：2022-12-29
申请号：US17841182
申请日：2022-06-15
Applicant: STMicroelectronics S.r.l.
Inventor： Ivan Floriani , Elena Brigo
Abstract: In an embodiment a control device includes a first input configured to receive a measurement signal representative of an output voltage of a switching circuit of a voltage regulator, a state determination block coupled to the first input and configured to generate a signal of actual operating condition of the voltage regulator and a driving signals generation module configured to generate at least one switching command signal for the switching circuit from an error signal representative of a difference between the output voltage and a nominal voltage, wherein the driving signals generation module includes an error-compensation circuit having a transfer function and configured to generate a control signal from the error signal and the actual operating condition signal, the control signal being a function of the actual operating condition.
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公开(公告)号：US20220416656A1
公开(公告)日：2022-12-29
申请号：US17807466
申请日：2022-06-17
Applicant: STMicroelectronics S.r.l.
Inventor： Marco Borghese , Mattia Carrera
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.
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258.发明申请公开(公告)号：US20220415705A1
公开(公告)日：2022-12-29
申请号：US17848050
申请日：2022-06-23
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Daria DORIA
IPC: H01L21/768 , H01L21/283 , H01L23/532
Abstract: An integrated electronic device including: a main body delimited by a front surface; a top conductive region extending within the main body, starting from the front surface; a first dielectric region extending on the front surface; and a barrier structure, arranged on the first dielectric region. A first aperture extends through the barrier structure and the first dielectric region; the first aperture is delimited at bottom by the top conductive region. The integrated electronic device further includes a contact structure including at least a first conductive region extending within the first aperture, in direct contact with the top conductive region and the barrier structure.
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公开(公告)号：US20220415703A1
公开(公告)日：2022-12-29
申请号：US17357826
申请日：2021-06-24
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Mikel AZPEITIA URQUIA , Lorenzo TENTORI
Abstract: The present disclosure is directed to at least one embodiment of a die including a sidewall having a uniform surface and an irregular surface. The uniform surface may be a scalloped surface and scallops of the scalloped surface are substantially the same size and shape relative to each other. The irregular surface has a more irregular texture as compared to the uniform surface. The irregular surface may include a plurality of randomly spaced high points and a plurality of randomly spaced low points that are between adjacent ones of the high points. In a method of manufacturing the die, a cavity is pre-formed in a substrate and a multilayer structure is formed on the substrate. The multilayer structure includes an active area that is aligned with and overlies the cavity. After the multilayer structure is formed, at least one recess is formed extending into the multilayer structure to the cavity. Forming the recess forms a die structure suspended above the cavity and an extension extending from the die structure to a suspension structure surrounding the die structure. The die structure is released from the die suspension structure by breaking the extension.
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公开(公告)号：US20220415655A1
公开(公告)日：2022-12-29
申请号：US17847679
申请日：2022-06-23
Applicant: STMicroelectronics S.r.l.
Inventor： Paolo BADALA' , Anna BASSI , Massimo BOSCAGLIA , Valentina SCUDERI , Giovanni FRANCO
IPC: H01L21/04 , H01L29/16 , H01L29/872 , H01L29/78
Abstract: A metal layer is deposited on a wafer that has silicon carbide, wherein the metal layer forms a contact face. A laser annealing is performed at the contact face using a laser beam application that causes the metal layer to react with the wafer and form a silicide layer. The laser beam has a footprint having a size. To laser anneal the contact face, a first portion of the contact face is irradiated, the footprint of the laser beam is moved by a step smaller than the size of the footprint, and a second portion of the contact face is irradiated, thereby causing the first portion and the second portion of the contact face to overlap.
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