Patents Assigned to STMicroelectronics
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Publication number: 20210173468Abstract: A memory includes writable memory units. Each memory unit is configurable: in a retention state wherein the memory unit is capable of retaining data until a subsequent power-off of the memory unit, and in a non-retention state wherein the memory unit does not retain data and consumes less power than in the first state. A controller configures any memory unit of the memory having undergone at least one write access since its last power-up to be in the retention state. The controller further configures at least one memory unit of the memory that has not undergone any write access since its last power-up in the non-retention state.Type: ApplicationFiled: December 2, 2020Publication date: June 10, 2021Applicant: STMicroelectronics (Grenoble 2) SASInventor: Michael GIOVANNINI
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Patent number: 11031511Abstract: Various embodiments provide a control circuit that includes at least one active module designed to enable an avalanche diode. The control circuit also includes at least one passive module designed to disable the avalanche diode.Type: GrantFiled: October 11, 2018Date of Patent: June 8, 2021Assignee: STMicroelectronics (Research & Development) LimitedInventor: Laurence Stark
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Patent number: 11029200Abstract: The following steps are performed in connection with a photodiode circuit: a) resetting the photodiode circuit; b) determining when a photodiode voltage changes in response to illumination to reach a threshold; and c) updating a counter in response to the determination in step b). The steps a) to c) are repeated until an end of a measurement period is reached. The value of the counter at the end of the measurement period is then output to indicate an intensity of the illumination.Type: GrantFiled: February 7, 2018Date of Patent: June 8, 2021Assignee: STMicroelectronics (Grenoble 2) SASInventor: Pascal Mellot
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Patent number: 11031082Abstract: An EEPROM includes a floating gate transistor having a source region, a channel region and a drain region. A first capa implant zone on a drain-side of the floating gate transistor has a first dopant concentration level. A second capa implant zone in the first capa implant zone adjacent the drain region has a second dopant concentration level that is greater than the first dopant concentration level. A gate oxide region insulates the floating gate electrode from the channel region, first capa implant zone and second capa implant zone. A thickness of the gate oxide region is thinner at the second capa implant zone than at the channel region and first capa implant zone.Type: GrantFiled: May 5, 2020Date of Patent: June 8, 2021Assignee: STMicroelectronics (Rousset) SASInventors: Francois Tailliet, Roberto Simola
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Patent number: 11031433Abstract: Image sensors and methods of manufacturing image sensors are provided herein. In an embodiment, a method of manufacturing an image sensor includes forming a structure having a front side and a back side. The structure includes a semiconductor layer extending between the front side and the back side of the structure, and a capacitive insulation wall extending through the semiconductor layer between the front side and the back side of the structure. The capacitive insulation wall includes first and second insulating walls separated by a region of a conductive or semiconductor material. The method further includes selectively etching, from the back side of the structure, portions of the semiconductor layer and the region of conductive or semiconductor material, while retaining adjacent portions of the first and second insulating walls.Type: GrantFiled: February 8, 2019Date of Patent: June 8, 2021Assignee: STMicroelectronics (Crolles) SASInventors: Frederic Lalanne, Laurent Gay, Pascal Fonteneau, Yann Henrion, Francois Guyader
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Patent number: 11031865Abstract: A charge pump includes an intermediate node capacitively coupled to receive a first clock signal oscillating between a ground and positive supply voltage, the intermediate node generating a first signal oscillating between a first and second voltage. A level shifting circuit shifts the first signal in response to a second clock signal to generate a second signal oscillating between first and third voltages. A CMOS switching circuit includes a first transistor having a source coupled to an input, a second transistor having a source coupled to an output and a gate coupled to receive the second signal. A common drain of the CMOS switching circuit is capacitively coupled to receive the first clock signal. When positively pumping, the first voltage is twice the second voltage and the third voltage is ground. When negatively pumping, the first and third voltages are of opposite polarity and the second voltage is ground.Type: GrantFiled: June 25, 2020Date of Patent: June 8, 2021Assignee: STMicroelectronics International N.V.Inventor: Vikas Rana
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Patent number: 11031672Abstract: An antenna includes two planar coils that are mechanically disposed face to face and electrically connected in series. The antenna is mounted to a disposable consumer product (for example, a cartridge for use with an electronic cigarette). The antenna is configured to support near field communications with a reader circuit for purposes of authenticating use of the disposable consumer product.Type: GrantFiled: July 25, 2019Date of Patent: June 8, 2021Assignees: STMicroelectronics Design and Application S.R.O., STMicroelectronics Application GmbHInventors: Petr Ourednik, Yvon Gourdou
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Patent number: 11031917Abstract: An operational amplifier integrated circuit includes a differential pair of transistors having a first input, a second input. A bias current generator applies a bias current to an output of the differential pair of transistors. A control loop generates a control voltage arising from a difference in potentials between the first input and the second input. An additional current that is added to the bias current is generated in response to the control voltage.Type: GrantFiled: May 29, 2019Date of Patent: June 8, 2021Assignee: STMicroelectronics (Rousset) SASInventors: Vincent Binet, Yohan Joly
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Patent number: 11031550Abstract: A memory cell includes a selection transistor having a control gate and a first conduction terminal connected to a variable-resistance element. The memory cell is formed in a wafer comprising a semiconductor substrate covered with a first insulating layer, the insulating layer being covered with an active layer made of a semiconductor. The gate is formed on the active layer and has a lateral flank covered with a second insulating layer. The variable-resistance element includes a first layer covering a lateral flank of the active layer in a trench formed through the active layer along the lateral flank of the gate and reaching the first insulating layer, and a second layer made of a variable-resistance material.Type: GrantFiled: June 28, 2019Date of Patent: June 8, 2021Assignees: STMicroelectronics (Crolles 2) SAS, STMicroelectronics (Rousset) SASInventors: Philippe Boivin, Simon Jeannot
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Patent number: 11030289Abstract: A method includes sensing through time-of-flight measurements a distance of an object from an electronic device, sensing motion of the electronic device, sensing acoustic signals received by the electronic device, and detecting the presence of a human proximate the electronic device based on the sensed distance, motion and acoustic signals. Access to the electronic device is controlled based on whether a human is detected as being present.Type: GrantFiled: July 31, 2018Date of Patent: June 8, 2021Assignee: STMicroelectronics, Inc.Inventors: Xiaoyong Yang, Sankalp Dayal
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Publication number: 20210167022Abstract: 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: ApplicationFiled: December 1, 2020Publication date: June 3, 2021Applicant: STMicroelectronics S.r.l.Inventor: Paolo CREMA
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Publication number: 20210167000Abstract: A plastic material substrate has a die mounting location for a semiconductor die. Metallic traces are formed on selected areas of the plastic material substrate, wherein the metallic traces provide electrically-conductive paths for coupling to the semiconductor die. The semiconductor die is attached onto the die mounting location. The semiconductor die attached onto the die mounting location is electrically bonded to selected ones of the metallic traces formed on the plastic material substrate. A package material is molded onto the semiconductor die attached onto the die mounting location.Type: ApplicationFiled: December 1, 2020Publication date: June 3, 2021Applicant: STMicroelectronics S.r.l.Inventors: Federico Giovanni ZIGLIOLI, Alberto PINTUS, Pierangelo MAGNI
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Publication number: 20210167240Abstract: A transmit integrated circuit includes a light source configured to generate a beam of light. A receive integrated circuit includes a first photosensor. A transmit optic is mounted over the transmit and receive integrated circuits. The transmit optic is formed by a prismatic light guide and is configured to receive the beam of light. An annular body region of the transmit optic surrounds a central opening which is aligned with the first photosensor. The annular body region includes a first reflective surface defining the central opening and further includes a ring-shaped light output surface surrounding the central opening. Light is output from the ring-shaped light output surface in response to light which propagates within the prismatic light guide in response to the received beam of light and which reflects off the first reflective surface.Type: ApplicationFiled: February 10, 2021Publication date: June 3, 2021Applicant: STMicroelectronics (Research & Development) LimitedInventors: Thineshwaran GOPAL KRISHNAN, Roy DUFFY
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Publication number: 20210166949Abstract: A leadframe includes a die pad and a set of electrically conductive leads. A semiconductor die, having a front surface and a back surface opposed to the front surface, is arranged on the die pad with the front surface facing away from the die pad. The semiconductor die is electrically coupled to the electrically conductive leads. A package molding material is molded over the semiconductor die arranged on the die pad. A stress absorbing material contained within a cavity delimited by a peripheral wall on the front surface of the semiconductor die is positioned intermediate at least one selected portion of the front surface of the semiconductor die and the package molding material.Type: ApplicationFiled: December 1, 2020Publication date: June 3, 2021Applicants: STMicroelectronics S.r.l., STMicroelectronics (Malta) LtdInventors: Roseanne DUCA, Dario PACI, Pierpaolo RECANATINI
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Publication number: 20210167009Abstract: A semiconductor region includes an isolating region which delimits a working area of the semiconductor region. A trench is located in the working area and further extends into the isolating region. The trench is filled by an electrically conductive central portion that is insulated from the working area by an isolating enclosure. A cover region is positioned to cover at least a first part of the filled trench, wherein the first part is located in the working area. A dielectric layer is in contact with the filled trench. A metal silicide layer is located at least on the electrically conductive central portion of a second part of the filled trench, wherein the second part is not covered by the cover region.Type: ApplicationFiled: February 11, 2021Publication date: June 3, 2021Applicant: STMicroelectronics (Rousset) SASInventor: Abderrezak MARZAKI
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Publication number: 20210165438Abstract: A bandgap circuit includes a supply node as well as a first and second bipolar transistors having jointly coupled base terminal at a bandgap node providing a bandgap voltage. First and second current generators are coupled to the supply node and supply mirrored first and second currents, respectively, to first and second circuit nodes. A third circuit node is coupled to the first bipolar transistor via a first resistor and coupled to ground via a second resistor, respectively. The third circuit node is also coupled to the second bipolar transistor so that the second resistor is traversed by a current which is the sum of the currents through the bipolar transistors. A decoupling stage intermediate the current generators and the bipolar transistors includes first and second cascode decoupling transistors having jointly coupled control terminals receiving a bias voltage sensitive to the bandgap voltage.Type: ApplicationFiled: November 17, 2020Publication date: June 3, 2021Applicant: STMicroelectronics S.r.l.Inventors: Stefano RAMORINI, Germano NICOLLINI
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Publication number: 20210167029Abstract: A first device includes a rectangular substrate having a first width and a first length and a first pattern of electrical interface nodes at first, second and third sides with a first set of electrical interface nodes at the fourth side. A second device includes a second rectangular substrate having a second width equal to the first width, a second length and a median line extending in the direction of the second width. A second pattern of electrical interface nodes for the second device includes two unmorphed replicas of the first pattern arranged mutually rotated 180° on opposite sides of the median line as well as two second sets of electrical interface nodes formed by two smaller morphed replicas of the first set of electrical interface nodes arranged mutually rotated 180° on opposite sides of said median line.Type: ApplicationFiled: December 1, 2020Publication date: June 3, 2021Applicant: STMicroelectronics S.r.l.Inventors: Cristina SOMMA, Giovanni GRAZIOSI
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Publication number: 20210167729Abstract: An electronic envelope detection circuit includes an input signal detecting circuit having at least one MOS transistor configured to receive a radiofrequency input signal and to deliver an internal signal on the basis of the input signal. The biasing point of the at least one transistor is controlled by the input signal and a control signal. A processing circuit that is coupled to the input signal detecting circuit is configured to deliver a low-frequency output signal on the basis of the internal signal and further deliver the control signal on the basis of the output signal. In operation, the value of the control signal decreases when the average power of the input signal increases, and vice versa.Type: ApplicationFiled: February 9, 2021Publication date: June 3, 2021Applicant: STMicroelectronics SAInventor: Lionel VOGT
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Publication number: 20210167062Abstract: A device includes a MOS transistor and a bipolar transistor at a same first portion of a substrate. The first portion includes a first well doped with a first type forming the channel of the MOS transistor and two first regions doped with a second type opposite to the first type that are arranged in the first well which form the source and drain of the MOS transistor. The first portion further includes: a second well doped with the second type that is arranged laterally with respect to the first well to form the base of the bipolar transistor; a second region doped with the first type that is arranged in the second well to form the emitter of the bipolar transistor; and a third region doped with the first type that is arranged under the second well to form the collector of the bipolar transistor.Type: ApplicationFiled: December 1, 2020Publication date: June 3, 2021Applicant: STMicroelectronics (Rousset) SASInventors: Romeric GAY, Abderrezak MARZAKI
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Patent number: 11025252Abstract: A failure determination circuit includes a latch circuit that receives an internal clock from a clock latch that rises in response to an external clock rising. In response to a rising edge of the external clock, the circuit generates a rising edge of a fault flag. In response to a rising edge of the internal clock if it occurs, the fault flag falls. The fault flag is then latched. The latched fault flag indicates a single bit upset in the clock latch if the falling edge of the fault flag was not generated prior to latching, if the clock latch is in an active mode, and indicates a single bit upset in the clock latch if the falling edge of the fault flag was generated prior to latching, if the clock latch is in an inactive mode.Type: GrantFiled: September 23, 2019Date of Patent: June 1, 2021Assignee: STMicroelectronics International N.V.Inventors: Shishir Kumar, Tanuj Kumar, Deepak Kumar Bihani