Patents by Inventor William Craig McDonald
William Craig McDonald 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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Patent number: 12160084Abstract: Described examples include apparatus having a driving electrode on a substrate. The apparatus has a platform suspended above the driving electrode and conductively coupled to a platform electrode, where the platform is configured to move in a direction perpendicular to a surface of the substrate in response to a voltage difference applied between the driving electrode and the platform electrode. The apparatus also has a mirror post on the platform. The apparatus has a mirror coupled to the platform by the mirror post, where the mirror is rectangular.Type: GrantFiled: October 15, 2019Date of Patent: December 3, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: James Norman Hall, Terry Alan Bartlett, William Craig McDonald
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Patent number: 12135415Abstract: A system includes a hinge structure. The hinge structure includes four support posts and four hinges, each hinge coupled to an edge of a support post and to a plate of the hinge structure, where each hinge includes two 90° turns. The system also includes a mirror coupled to the hinge structure and an electrode structure coupled to the hinge structure.Type: GrantFiled: August 10, 2021Date of Patent: November 5, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: William Craig McDonald, James Norman Hall, Kelly Jay Taylor, Song Zheng
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Patent number: 12130425Abstract: Systems and Apparatus for micromirror designs with electrode contact. In some examples, a micromirror including a mirror, a mirror via coupled to the mirror, a hinge coupled to the mirror via, the hinge including a springtip associated with a first side of the micromirror, the springtip associated with a first terminal, and an electrode associated with the first side of the micromirror, the electrode having a dielectric coating in contact with the springtip, the electrode associated with a second terminal different than the first terminal.Type: GrantFiled: September 3, 2021Date of Patent: October 29, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: William Craig McDonald, Ryan Patrick Savage
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Patent number: 11977220Abstract: A digital micromirror device comprises an array of micromirror pixels, the array comprising a first micromirror pixel and a second micromirror pixel. The first micromirror pixel comprises a hinge, where the hinge is configured to tilt toward a first raised address electrode and toward a second raised address electrode. The first micromirror pixel also comprises a first micromirror coupled to the hinge, where the first micromirror has a sculpted edge. The second micromirror pixel comprises a second micromirror, where a first gap between a first point on the sculpted edge and a nearest point to the first point on the second micromirror is larger than a second gap between a second point on the sculpted edge and a nearest point to the second point on the second micromirror.Type: GrantFiled: December 3, 2020Date of Patent: May 7, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: William Craig McDonald, James Norman Hall, Terry Alan Bartlett
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Publication number: 20230070502Abstract: Systems and Apparatus for micromirror designs with electrode contact. In some examples, a micromirror including a mirror, a mirror via coupled to the mirror, a hinge coupled to the mirror via, the hinge including a springtip associated with a first side of the micromirror, the springtip associated with a first terminal, and an electrode associated with the first side of the micromirror, the electrode having a dielectric coating in contact with the springtip, the electrode associated with a second terminal different than the first terminal.Type: ApplicationFiled: September 3, 2021Publication date: March 9, 2023Inventors: William Craig McDonald, Ryan Patrick Savage
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Publication number: 20220269067Abstract: A system includes a hinge structure. The hinge structure includes four support posts and four hinges, each hinge coupled to an edge of a support post and to a plate of the hinge structure, where each hinge includes two 90° turns. The system also includes a mirror coupled to the hinge structure and an electrode structure coupled to the hinge structure.Type: ApplicationFiled: August 10, 2021Publication date: August 25, 2022Inventors: William Craig McDONALD, James Norman HALL, Kelly Jay TAYLOR, Song ZHENG
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Patent number: 11256083Abstract: A microelectromechanical actuator for a light beam steering device is provided that includes memory cells coupled to at least one electronic circuitry component and electrode segments coupled to a respective one of the memory cells via the at least one electronic circuitry component. A flexible metal layer having support pillars is on the electrode segments. Flexible beams are attached to the support pillars and a movable electrode attaches to the flexible beams. A mirror is attached to the movable electrode. When one or more of the electrode segments is activated, the mirror is displaced a distance to steer a light beam output from a light source in a direction.Type: GrantFiled: December 27, 2018Date of Patent: February 22, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: William Craig McDonald, James Norman Hall
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Publication number: 20210382296Abstract: A digital micromirror device comprises an array of micromirror pixels, the array comprising a first micromirror pixel and a second micromirror pixel. The first micromirror pixel comprises a hinge, where the hinge is configured to tilt toward a first raised address electrode and toward a second raised address electrode. The first micromirror pixel also comprises a first micromirror coupled to the hinge, where the first micromirror has a sculpted edge. The second micromirror pixel comprises a second micromirror, where a first gap between a first point on the sculpted edge and a nearest point to the first point on the second micromirror is larger than a second gap between a second point on the sculpted edge and a nearest point to the second point on the second micromirror.Type: ApplicationFiled: December 3, 2020Publication date: December 9, 2021Inventors: William Craig McDONALD, James Norman HALL, Terry Alan BARTLETT
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Publication number: 20210111537Abstract: Described examples include apparatus having a driving electrode on a substrate. The apparatus has a platform suspended above the driving electrode and conductively coupled to a platform electrode, where the platform is configured to move in a direction perpendicular to a surface of the substrate in response to a voltage difference applied between the driving electrode and the platform electrode. The apparatus also has a mirror post on the platform. The apparatus has a mirror coupled to the platform by the mirror post, where the mirror is rectangular.Type: ApplicationFiled: October 15, 2019Publication date: April 15, 2021Inventors: James Norman Hall, Terry Alan Bartlett, William Craig McDonald
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Publication number: 20200209614Abstract: A microelectromechanical actuator for a light beam steering device is provided that includes memory cells coupled to at least one electronic circuitry component and electrode segments coupled to a respective one of the memory cells via the at least one electronic circuitry component. A flexible metal layer having support pillars is on the electrode segments. Flexible beams are attached to the support pillars and a movable electrode attaches to the flexible beams. A mirror is attached to the movable electrode. When one or more of the electrode segments is activated, the mirror is displaced a distance to steer a light beam output from a light source in a direction.Type: ApplicationFiled: December 27, 2018Publication date: July 2, 2020Inventors: WILLIAM CRAIG MCDONALD, JAMES NORMAN HALL
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Patent number: 10371939Abstract: One or more apparatus providing over-travel protection for actuators are disclosed. An example apparatus includes a mirror; a first plate coupled to the mirror; and a support post coupled the first plate, the support post structured to prevent the mirror from moving within a threshold distance to a second plate.Type: GrantFiled: December 8, 2017Date of Patent: August 6, 2019Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: William Craig McDonald, James Norman Hall, Adam Joseph Fruehling
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Publication number: 20190179135Abstract: One or more apparatus providing over-travel protection for actuators are disclosed. An example apparatus includes a mirror; a first plate coupled to the mirror; and a support post coupled the first plate, the support post structured to prevent the mirror from moving within a threshold distance to a second plate.Type: ApplicationFiled: December 8, 2017Publication date: June 13, 2019Inventors: William Craig McDonald, James Norman Hall, Adam Joseph Fruehling
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Patent number: 9263973Abstract: A MEMS electrostatic actuator includes a bottom plate affixed to a substrate and a top plate suspended above the bottom plate. The top plate has a parallel plate center section and two rotating members electrically connected to the center section. Each rotating member is attached centrally of the rotating member for rotation about an axis of rotation to a set of anchor posts. The attachment includes at least one pair of torsional springs attached along each axis, each spring comprising a rectangular metal square that twists as the rotational members rotate. Electrostatic pull-down electrodes are underneath each rotational member.Type: GrantFiled: April 21, 2015Date of Patent: February 16, 2016Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Arun Kumar Gupta, William Craig McDonald
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Publication number: 20150229241Abstract: A MEMS electrostatic actuator includes a bottom plate affixed to a substrate and a top plate suspended above the bottom plate. The top plate has a parallel plate center section and two rotating members electrically connected to the center section. Each rotating member is attached centrally of the rotating member for rotation about an axis of rotation to a set of anchor posts. The attachment includes at least one pair of torsional springs attached along each axis, each spring comprising a rectangular metal square that twists as the rotational members rotate. Electrostatic pull-down electrodes are underneath each rotational member.Type: ApplicationFiled: April 21, 2015Publication date: August 13, 2015Inventors: Arun Kumar Gupta, William Craig McDonald
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Patent number: 7355777Abstract: System and method for storing energy using electromechanically active materials in micro electromechanical systems. A preferred embodiment comprises a movable element, an intermediate layer formed under the movable element, and electrical addressing circuitry formed under the intermediate layer. The intermediate layer contains a hinge and at least one flexible member associated with the movable element, with the flexible member comprising a layer made from an electromechanically active material. The electromechanically active material contracts or deforms when an electric field is applied, helping the movable element move from a first position to a second position. The use of the electromechanically active material enables the flexible member to apply a greater force on the movable element to help the movable element overcome stiction.Type: GrantFiled: May 9, 2006Date of Patent: April 8, 2008Assignee: Texas Instruments IncorporatedInventors: Patrick Ian Oden, William Craig McDonald