公开(公告)号：US20230133912A1

公开(公告)日：2023-05-04

申请号：US17515212

申请日：2021-10-29

Applicant: STMICROELECTRONICS APPLICATION GMBH ,  STMicroelectronics S.r.l. ,  STMicroelectronics International N.V.

Inventor： Avneep Kumar Goyal ,  Thomas Szurmant ,  Misaele Marletti ,  Alessandro Daolio

IPC: G01R31/317 ,  G01R31/319 ,  G01R31/28

Abstract: A trace-data preparation circuit including a filtering circuit to receive traced memory-write data and a First In First Out buffer coupled with the filtering circuit to receive selected memory-write data filtered by the filtering circuit. The trace-data preparation circuit further including a data compression circuit to provide packaging data to a packaging circuit that groups the selected memory-write data.

公开(公告)号：US20230129720A1

公开(公告)日：2023-04-27

申请号：US17966344

申请日：2022-10-14

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Domenico GIUSTI ,  Fabio QUAGLIA ,  Carlo Luigi PRELINI

IPC: B81B3/00 ,  B81C1/00 ,  H10N30/87 ,  H10N30/20

Abstract: PMUT acoustic transducer formed in a body of semiconductor material having a face and accommodating a plurality of first buried cavities, having an annular shape, arranged concentrically with each other and extending at a distance from the face of the body. The first buried cavities delimit from below a plurality of first membranes formed by the body so that each first membrane extends between a respective first buried cavity of the plurality of first buried cavities and the face of the body. A plurality of piezoelectric elements extend on the face of the body, each piezoelectric element extending above a respective first membrane of the plurality of first membranes. The first membranes have different widths, variable between a minimum value and a maximum value.

公开(公告)号：US20230127446A1

公开(公告)日：2023-04-27

申请号：US17963534

申请日：2022-10-11

Applicant: STMicroelectronics S.r.l.

Inventor： Stefano RAMORINI

IPC: H02M3/158 ,  H02M1/00 ,  G01R15/14

Abstract: A power switch current sensing circuit includes matching first and second transistors having sources connected to first and second terminals, respectively, of the power switch. A current mirror has a first node coupled to a drain of the first transistor and a second node coupled to a drain of the second transistor. The current mirror sinks a current from the first node equal to a current flowing through the second transistor. A biasing circuit provides a same biasing voltage to the control terminals of the first and second transistors. An output resistance is coupled between the first node and a reference voltage node. A difference between a current flowing through the first transistor and the current sunk by the current mirror circuit from the first node flows through the output resistance. An output voltage produced at the first node is indicative of the current flowing through the power switch.

公开(公告)号：US11632029B2

公开(公告)日：2023-04-18

申请号：US16802741

申请日：2020-02-27

Applicant: STMicroelectronics S.r.l.

Inventor： Roberto La Rosa ,  Salvatore Baglio ,  Carlo Trigona

IPC: H02K35/02 ,  G10K9/122 ,  G10K9/16 ,  H02K1/34 ,  H02N2/18

Abstract: An energy harvester includes an elongated tubular casing extending around a longitudinal axis between opposed first and second ends. A body is arranged in the casing. A helical electrical winding is wound around the longitudinal axis. The body is arranged to move along the longitudinal axis with alternate motion away from the first end towards the second end and away from the second end towards the first end. As a result of this alternate motion, an electromotive force is produced in the at least one helical electrical winding. Furthermore, at least one of the first and second ends includes a piezoelectric transducer that is configured to co-operate in a kinetic energy transfer relationship with the at least one body to generate an electric voltage as a result of the at least one body reaching, in the alternate motion, an end-of-travel position towards the piezoelectric transducer.

公开(公告)号：US11631376B1

公开(公告)日：2023-04-18

申请号：US17574803

申请日：2022-01-13

Applicant: STMicroelectronics S.r.l.

Inventor： Gaetano L'Episcopo ,  Giovanni Conti ,  Carmelo Occhipinti ,  Mario Antonio Aleo

IPC: G09G3/34 ,  G09G3/36

Abstract: A non-emissive display includes a backlight controller sending a pulse during each sub-frame of a plurality of frames to row and column drivers that drive backlight zones. The row drivers count each pulse to keep a pulse count total, and reset the pulse count total when it is equal to a first number indicating how many row drivers are present. Each row driver activates its channels and waits for a next pulse if the pulse count total is not equal to the first number and if the pulse count total is equal to a second number indicating in which sub-frame that first driver is to be activated. Each row driver waits for a next pulse if the pulse count total is not equal to the first number and the second number. Each column driver activates its channel in response to receipt of each pulse.

公开(公告)号：US20230112999A1

公开(公告)日：2023-04-13

申请号：US18064829

申请日：2022-12-12

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Domenico GIUSTI ,  Andrea Nicola COLECCHIA ,  Gaetano SANTORUVO

IPC: B41J2/03

Abstract: A microfluidic device for continuous ejection of fluids includes: a semiconductor body that laterally delimits chambers; an intermediate structure which forms membranes each delimiting a top of a corresponding chamber; and a nozzle body which overlies the intermediate structure. The device includes, for each chamber: a corresponding piezoelectric actuator; a supply channel which traverses the intermediate structure and communicates with the chamber; and a nozzle which traverses the nozzle body and communicates with the supply channel. Each actuator is configured to operate i) in a resting condition such that the pressure of a fluid within the corresponding chamber causes the fluid to pass through the supply channel and become ejected from the nozzle as a continuous stream, and ii) in an active condition, where it causes a deformation of the corresponding membrane and a consequent variation of the pressure of the fluid, causing a temporary interruption of the continuous stream.

公开(公告)号：US20230110259A1

公开(公告)日：2023-04-13

申请号：US18079704

申请日：2022-12-12

Applicant: STMicroelectronics (MALTA) Ltd ,  STMicroelectronics S.r.l.

Inventor： Kevin FORMOSA ,  Marco DEL SARTO

IPC: B81C1/00 ,  B81B7/00

Abstract: A first electronic component, such as a sensor having opposed first and second surfaces and a first thickness, is arranged on a support member with the second surface facing towards the support member. A second electronic component, such as an integrated circuit mounted on a substrate and having a second thickness less than the first thickness, is arranged on the support member with a substrate surface opposed the second electronic component facing towards the support member. A package molding material is molded onto the support member to encapsulate the second electronic component while leaving exposed the first surface of the first electronic component. The support member is then removed to expose the second surface of the first electronic component and the substrate surface of the substrate.

公开(公告)号：US20230110175A1

公开(公告)日：2023-04-13

申请号：US17948075

申请日：2022-09-19

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Andrea NOMELLINI ,  Luca SEGHIZZI

IPC: B01L3/00 ,  C23C16/24 ,  C23C16/40 ,  C23C16/04

Abstract: Process for manufacturing a microfluidic device, wherein a sacrificial layer is formed on a semiconductor substrate; a carrying layer is formed on the sacrificial layer; the carrying layer is selectively removed to form at least one release opening extending through the carrying layer; a permeable layer of a permeable semiconductor material is formed in the at least one release opening; the sacrificial layer is selectively removed through the permeable layer to form a fluidic chamber; the at least one release opening is filled with non-permeable semiconductor filling material, forming a monolithic body having a membrane region; an actuator element is formed on the membrane region and a cap element is attached to the monolithic body and surrounds the actuator element.

公开(公告)号：US11626880B2

公开(公告)日：2023-04-11

申请号：US17450711

申请日：2021-10-13

Applicant: STMicroelectronics S.r.l.

Inventor： Liliana Arcidiacono ,  Alessandro Nicolosi ,  Valeria Bottarel

IPC: H03K19/17736 ,  H03K19/08

Abstract: A circuit receives an input signal having a first level and a second level. A logic circuit includes a finite state machine circuit, an edge detector circuit, and a timer circuit. The finite state machine circuit is configured to set a mode of operation of the circuit. The edge detector circuit is configured to detect a transition between the first and second level. The timer circuit is configured to determine whether the first or second level is maintained over an interval, which starts from a transition detected by the edge detector circuit. The finite state machine circuit is configured to change the mode of operation based on the timer circuit determining that the first or second level has been maintained over the interval.

公开(公告)号：US11626801B2

公开(公告)日：2023-04-11

申请号：US17496523

申请日：2021-10-07

Applicant: STMicroelectronics S.r.l.

Inventor： Osvaldo Enrico Zambetti

IPC: H02M3/158 ,  G01R31/327 ,  H02M1/00

Abstract: A converter includes two switching stages coupled in series between positive and negative input terminals. A control circuit is configured for driving the switching stages based on an output voltage of the converter. A first switching stage includes two switches coupled in series between a positive input terminal and a first node. A capacitor and an inductor are coupled in series between the two switches and a positive output terminal. A third switch is coupled between a node between the capacitor and the inductor and the negative input terminal. A second capacitor is coupled between the first node and the negative input terminal. A second switching stage includes a second node coupled to the first node. Two additional electronic switches are coupled in series between the second node and the negative input terminal. A second inductor is coupled between the two additional switches and the positive output terminal.