Patents by Inventor Scott Lyall Cargill
Scott Lyall Cargill has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20190127217Abstract: This application relates to MEMS transducer having a membrane layer (101) and at least one variable vent structure (301). The variable vent structure has a vent hole for venting fluid so as to reduce a pressure differential across the membrane layer and a moveable vent cover (302a, 302b) which, at an equilibrium position, at least partly blocks the vent hole. The vent cover is moveable from its equilibrium position in response to a pressure differential across the vent cover so as to vary the size of a flow path through the vent hole. In various embodiments the vent cover comprises at least a first flap section (302a) and a second flap section (302b), the first flap section being hingedly coupled to the side of the vent hole and the second flap section being hingedly coupled to the first flap section so as to be moveable with respect to the first flap section.Type: ApplicationFiled: October 2, 2018Publication date: May 2, 2019Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Scott Lyall CARGILL, Marek Sebastian PIECHOCINSKI
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Patent number: 10266393Abstract: The application describes MEMS transducers having a vent structure provided in a flexible membrane of the vent structure The vent structure comprises at least one moveable portion and the vent structure is configured such that, in response to a differential pressure across the vent structure, the moveable portion is rotatable about first and second axes of rotation, which axes of rotation extend in the plane of the membrane.Type: GrantFiled: January 24, 2017Date of Patent: April 23, 2019Assignee: Cirrus Logic, Inc.Inventors: Colin Wei Hong Chung, Scott Lyall Cargill, Colin Robert Jenkins
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Publication number: 20190110126Abstract: The application relates to MEMS transducers comprising at least one support structure for connecting a backplate structure of the transducer with an underlying substrate. A strengthening portion is provided in the region of the support structure.Type: ApplicationFiled: October 3, 2018Publication date: April 11, 2019Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Scott Lyall CARGILL, Timothy John BROSNIHAN
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Publication number: 20190020962Abstract: The application describes a MEMS transducer in which first and second conductive elements of a capacitor are both provided on the membrane. The membrane is shaped that the first and second conductive elements are displaced relative to each other when the flexible membrane deflects in response to a pressure differential across the membrane. For example the membrane may be corrugated.Type: ApplicationFiled: September 20, 2018Publication date: January 17, 2019Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: James Thomas DEAS, Scott Lyall CARGILL
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Patent number: 10118817Abstract: This application relates to MEMS transducer having a membrane layer (101) and at least one variable vent structure (301). The variable vent structure has a vent hole for venting fluid so as to reduce a pressure differential across the membrane layer and a moveable vent cover (302a, 302b) which, at an equilibrium position, at least partly blocks the vent hole. The vent cover is moveable from its equilibrium position in response to a pressure differential across the vent cover so as to vary the size of a flow path through the vent hole. In various embodiments the vent cover comprises at least a first flap section (302a) and a second flap section (302b), the first flap section being hingedly coupled to the side of the vent hole and the second flap section being hingedly coupled to the first flap section so as to be moveable with respect to the first flap section.Type: GrantFiled: May 30, 2017Date of Patent: November 6, 2018Assignee: Cirrus Logic, Inc.Inventors: Scott Lyall Cargill, Marek Sebastian Piechocinski
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Patent number: 10111021Abstract: The application describes a MEMS transducer in which first and second conductive elements of a capacitor are both provided on the membrane. The membrane is shaped that the first and second conductive elements are displaced relative to each other when the flexible membrane deflects in response to a pressure differential across the membrane. For example the membrane may be corrugated.Type: GrantFiled: July 26, 2017Date of Patent: October 23, 2018Assignee: Cirrus Logic, Inc.Inventors: James Thomas Deas, Scott Lyall Cargill
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Patent number: 10085094Abstract: A MEMS transducer structure comprises a substrate comprising a cavity. A membrane layer is supported relative to the substrate to provide a flexible membrane. A peripheral edge of the cavity defines at least one perimeter region that is convex with reference to the center of the cavity. The peripheral edge of the cavity may further define at least one perimeter region that is concave with reference to the center of the cavity.Type: GrantFiled: June 28, 2017Date of Patent: September 25, 2018Assignee: Cirrus Logic, Inc.Inventors: Scott Lyall Cargill, Colin Robert Jenkins, Euan James Boyd
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Publication number: 20180035229Abstract: The application describes a MEMS transducer in which first and second conductive elements of a capacitor are both provided on the membrane. The membrane is shaped that the first and second conductive elements are displaced relative to each other when the flexible membrane deflects in response to a pressure differential across the membrane. For example the membrane may be corrugated.Type: ApplicationFiled: July 26, 2017Publication date: February 1, 2018Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: James Thomas DEAS, Scott Lyall CARGILL
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Publication number: 20180007474Abstract: A MEMS transducer structure comprises a substrate comprising a cavity. A membrane layer is supported relative to the substrate to provide a flexible membrane. A peripheral edge of the cavity defines at least one perimeter region that is convex with reference to the center of the cavity. The peripheral edge of the cavity may further define at least one perimeter region that is concave with reference to the center of the cavity.Type: ApplicationFiled: June 28, 2017Publication date: January 4, 2018Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Scott Lyall CARGILL, Colin Robert JENKINS, Euan James BOYD
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Publication number: 20180002161Abstract: The present application describes MEMS transducer having a membrane and a membrane electrode. The membrane and membrane electrode form a two-layer structure. The membrane electrode is in the form of a lattice of conductive material. The pitch of the lattice and/or the size of the openings varies from a central region of the membrane electrode to a region laterally outside the central region.Type: ApplicationFiled: June 29, 2017Publication date: January 4, 2018Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Colin Robert JENKINS, Scott Lyall CARGILL, Clive Robert GRAHAM
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Publication number: 20180002159Abstract: The application describes MEMS transducer having a flexible membrane and which seeks to alleviate and/or redistribute stresses within the membrane layer. A membrane having a first/active region and a second/inactive region is described.Type: ApplicationFiled: January 25, 2016Publication date: January 4, 2018Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Scott Lyall CARGILL, Colin Robert JENKINS, Euan James BOYD, Richard Ian LAMING
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Publication number: 20180007473Abstract: The application describes MEMS transducers comprising a flexible membrane supported at a supporting edge relative to a substrate and further comprising one or more unbound edges. The shape of the unbound edge is selected so that the flexible membrane tends to bend along more than one bend axis in the region of the supporting edge.Type: ApplicationFiled: June 28, 2017Publication date: January 4, 2018Applicant: Cirrus Logic International Semiconductor Ltd.Inventor: Scott Lyall CARGILL
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Publication number: 20180002168Abstract: The application describes MEMS transducer having a flexible membrane and which seeks to alleviate and/or redistribute stresses within the membrane layer. A membrane having a first/active region and a second/inactive region is described.Type: ApplicationFiled: January 25, 2016Publication date: January 4, 2018Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Scott Lyall CARGILL, Colin Robert JENKINS, Euan James BOYD, Richard Ian LAMING
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Publication number: 20170260044Abstract: This application relates to MEMS transducer having a membrane layer (101) and at least one variable vent structure (301). The variable vent structure has a vent hole for venting fluid so as to reduce a pressure differential across the membrane layer and a moveable vent cover (302a, 302b) which, at an equilibrium position, at least partly blocks the vent hole. The vent cover is moveable from its equilibrium position in response to a pressure differential across the vent cover so as to vary the size of a flow path through the vent hole. In various embodiments the vent cover comprises at least a first flap section (302a) and a second flap section (302b), the first flap section being hingedly coupled to the side of the vent hole and the second flap section being hingedly coupled to the first flap section so as to be moveable with respect to the first flap section.Type: ApplicationFiled: May 30, 2017Publication date: September 14, 2017Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Scott Lyall Cargill, Marek Sebastian Piechocinski
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Publication number: 20170217761Abstract: The application describes MEMS transducers having a vent structure provided in a flexible membrane of the vent structure The vent structure comprises at least one moveable portion and the vent structure is configured such that, in response to a differential pressure across the vent structure, the moveable portion is rotatable about first and second axes of rotation, which axes of rotation extend in the plane of the membrane.Type: ApplicationFiled: January 24, 2017Publication date: August 3, 2017Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Colin Wei Hong CHUNG, Scott Lyall CARGILL, Colin Robert JENKINS
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Patent number: 9695038Abstract: This application relates to MEMS transducer having a membrane layer (101) and at least one variable vent structure (301). The variable vent structure has a vent hole for venting fluid so as to reduce a pressure differential across the membrane layer and a moveable vent cover (302a, 302b) which, at an equilibrium position, at least partly blocks the vent hole. The vent cover is moveable from its equilibrium position in response to a pressure differential across the vent cover so as to vary the size of a flow path through the vent hole. In various embodiments the vent cover comprises at least a first flap section (302a) and a second flap section (302b), the first flap section being hingedly coupled to the side of the vent hole and the second flap section being hingedly coupled to the first flap section so as to be moveable with respect to the first flap section.Type: GrantFiled: December 16, 2015Date of Patent: July 4, 2017Assignee: Cirrus Logic International Semiconductor Ltd.Inventors: Scott Lyall Cargill, Marek Sebastian Piechocinski
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Publication number: 20160176704Abstract: This application relates to MEMS transducer having a membrane layer (101) and at least one variable vent structure (301). The variable vent structure has a vent hole for venting fluid so as to reduce a pressure differential across the membrane layer and a moveable vent cover (302a, 302b) which, at an equilibrium position, at least partly blocks the vent hole. The vent cover is moveable from its equilibrium position in response to a pressure differential across the vent cover so as to vary the size of a flow path through the vent hole. In various embodiments the vent cover comprises at least a first flap section (302a) and a second flap section (302b), the first flap section being hingedly coupled to the side of the vent hole and the second flap section being hingedly coupled to the first flap section so as to be moveable with respect to the first flap section.Type: ApplicationFiled: December 16, 2015Publication date: June 23, 2016Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Scott Lyall Cargill, Marek Sebastian Piechocinski