公开(公告)号：US20180038692A1

公开(公告)日：2018-02-08

申请号：US15458704

申请日：2017-03-14

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Daniele Prati ,  Carlo Valzasina ,  Tiziano Chiarillo ,  Pasquale Franco

IPC: G01C19/5712 ,  G01C19/5776

CPC classification number: G01C19/5712 ,  G01C19/574 ,  G01C19/5776

Abstract: A MEMS gyroscope, wherein a suspended mass is mobile with respect to a supporting structure. The mobile mass is affected by quadrature error caused by a quadrature moment; a driving structure is coupled to the suspended mass for controlling the movement of the mobile mass in a driving direction at a driving frequency. Motion-sensing electrodes, coupled to the mobile mass, detect the movement of the mobile mass in the sensing direction and quadrature-compensation electrodes are coupled to the mobile mass to generate a compensation moment opposite to the quadrature moment. The gyroscope is configured to bias the quadrature-compensation electrodes with a compensation voltage so that the difference between the resonance frequency of the mobile mass and the driving frequency has a preset frequency-mismatch value.

公开(公告)号：US11002543B2

公开(公告)日：2021-05-11

申请号：US16116511

申请日：2018-08-29

Applicant: STMicroelectronics S.r.l.

Inventor： Daniele Prati

IPC: G01C19/5712 ,  G01C19/5733 ,  G06F12/0817

Abstract: A MEMS gyroscope can include a supporting structure and a mobile mass elastically suspended from the supporting structure in a driving direction and in a sensing direction, mutually perpendicular. A driving structure is coupled to the mobile mass for controlling a driving movement of the mobile mass in the driving direction at a driving frequency. A driving-frequency tuning electrode, distinct from the driving structure, faces the mobile mass. A driving-frequency tuner electrically coupled to the driving-frequency tuning electrode for supplying a tuning voltage to the driving-frequency tuning electrode.

公开(公告)号：US10444013B2

公开(公告)日：2019-10-15

申请号：US15458704

申请日：2017-03-14

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Daniele Prati ,  Carlo Valzasina ,  Tiziano Chiarillo ,  Pasquale Franco

IPC: G01C19/5712 ,  G01C19/5776 ,  G01C19/574

Abstract: A MEMS gyroscope, wherein a suspended mass is mobile with respect to a supporting structure. The mobile mass is affected by quadrature error caused by a quadrature moment; a driving structure is coupled to the suspended mass for controlling the movement of the mobile mass in a driving direction at a driving frequency. Motion-sensing electrodes, coupled to the mobile mass, detect the movement of the mobile mass in the sensing direction and quadrature-compensation electrodes are coupled to the mobile mass to generate a compensation moment opposite to the quadrature moment. The gyroscope is configured to bias the quadrature-compensation electrodes with a compensation voltage so that the difference between the resonance frequency of the mobile mass and the driving frequency has a preset frequency-mismatch value.

公开(公告)号：US20190072389A1

公开(公告)日：2019-03-07

申请号：US16116511

申请日：2018-08-29

Applicant: STMicroelectronics S.r.l.

Inventor： Daniele Prati

IPC: G01C19/5712 ,  G06F12/0817 ,  G01C19/5733

Abstract: A MEMS gyroscope can include a supporting structure and a mobile mass elastically suspended from the supporting structure in a driving direction and in a sensing direction, mutually perpendicular. A driving structure is coupled to the mobile mass for controlling a driving movement of the mobile mass in the driving direction at a driving frequency. A driving-frequency tuning electrode, distinct from the driving structure, faces the mobile mass. A driving-frequency tuner electrically coupled to the driving-frequency tuning electrode for supplying a tuning voltage to the driving-frequency tuning electrode.

公开(公告)号：US20160107445A1

公开(公告)日：2016-04-21

申请号：US14976445

申请日：2015-12-21

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Domenico Giusti ,  Daniele Prati

IPC: B41J2/14

CPC classification number: B41J2/14064 ,  B41J2/14056 ,  B41J2/14072 ,  B41J2/1412 ,  B41J2/14129 ,  B41J2002/14403 ,  B41J2202/11 ,  Y10T29/49352

Abstract: The present disclosure is directed to a microfluidic die that includes a first larger heater and a second smaller heater is a single chamber. The first heater is configured to form a primary bubble that ejects fluid from a nozzle associated with the chamber. The second heater is configured to form a secondary bubble to prevent blow back caused when the primary bubble bursts and ejects fluid from the nozzle. The first and second heater may be coupled to a single input trace and a single ground trace.

公开(公告)号：US09248648B2

公开(公告)日：2016-02-02

申请号：US14310898

申请日：2014-06-20

Applicant: STMicroelectronics S.r.l.

Inventor： Domenico Giusti ,  Daniele Prati

IPC: B41J2/05 ,  B41J2/14 ,  B41J2/16

CPC classification number: B41J2/14064 ,  B41J2/14056 ,  B41J2/14072 ,  B41J2/1412 ,  B41J2/14129 ,  B41J2002/14403 ,  B41J2202/11 ,  Y10T29/49352

Abstract: The present disclosure is directed to a microfluidic die that includes a first larger heater and a second smaller heater is a single chamber. The first heater is configured to form a primary bubble that ejects fluid from a nozzle associated with the chamber. The second heater is configured to form a secondary bubble to prevent blow back caused when the primary bubble bursts and ejects fluid from the nozzle. The first and second heater may be coupled to a single input trace and a single ground trace.

Abstract translation: 本公开涉及包括第一较大加热器并且第二较小加热器是单室的微流体管芯。 第一加热器被配置成形成从与腔室相关联的喷嘴喷出流体的初级气泡。 第二加热器构造成形成二次气泡，以防止当初级泡沫从喷嘴中喷出并喷射流体时引起的回吹。 第一和第二加热器可以耦合到单个输入迹线和单个接地迹线。