Patents by Inventor Kuang L. Yang
Kuang L. Yang 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: 10920756Abstract: Microelectromechanical systems (MEMS) devices are described that include a proof mass movably connected to a substrate by accordion springs disposed on opposite sides of the proof mass, with a coupler coupling two of the accordion springs together. The coupler is a bar in some implementations, and may be rigid. The coupler therefore restricts the motion of the accordion springs relative to each other. In this manner, the motion of the proof mass may be restricted to preferred types and frequencies.Type: GrantFiled: September 27, 2016Date of Patent: February 16, 2021Assignee: Analog Devices, Inc.Inventors: Qian Zhang, Kuang L. Yang, Lei Gu
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Patent number: 10746696Abstract: A microfluidic ion detector for detecting heavy metal ions in liquid and particulate matter from gas samples is described. The microfluidic ion detector includes a sample extraction structure for extracting sample ions from a sample liquid or extracting sample ions from the particulate matter of a gas sample, a separation structure for separating sample ions of different types once extracted, and a detection structure for detecting the sample ions. The microfluidic ion detector also includes a reference reservoir providing a reference ion against which the sample may be calibrated based on the operation of the separation structure. A portable, self-calibrating ion detector may be realized by including the described components on a single substrate.Type: GrantFiled: December 19, 2016Date of Patent: August 18, 2020Assignee: Analog Devices, Inc.Inventors: Chen Yang, Yumeng Liu, Li Chen, Kuang L. Yang
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Patent number: 10536098Abstract: An exemplary energy harvester includes a piezoelectric diaphragm, an eccentric mass that rotates in response to external motion, and a piezoelectric stress inducer coupled with the eccentric mass and the piezoelectric diaphragm. The piezoelectric stress inducer deforms the piezoelectric diaphragm in response to rotational motion of the eccentric mass, causing the piezoelectric diaphragm to generate electrical energy.Type: GrantFiled: February 12, 2016Date of Patent: January 14, 2020Assignee: ANALOG DEVICES, INC.Inventors: Qian Zhang, Yingqi Jiang, Kuang L. Yang
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Patent number: 10468201Abstract: A super-capacitor has a substrate, at least two porous electrodes integrated within the substrate, and an electrolyte extending between the at least two porous electrodes. The electrolyte is integrated with the substrate, and is positioned within the substrate. The at least two porous electrodes and electrolyte are configured to store charge as a super-capacitor.Type: GrantFiled: October 8, 2014Date of Patent: November 5, 2019Assignee: Analog Devices, Inc.Inventors: Yingqi Jiang, Kuang L. Yang
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Patent number: 10373766Abstract: A method of fabricating a super-capacitor provides a substrate, and then adds an electrode and electrolyte template film, having a well for receiving the electrode, to the substrate. The method also adds a second electrolyte to the electrode and electrolyte template.Type: GrantFiled: September 24, 2018Date of Patent: August 6, 2019Assignee: Analog Devices, Inc.Inventors: Yingqi Jiang, Kuang L. Yang
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Publication number: 20190027322Abstract: A method of fabricating a super-capacitor provides a substrate, and then adds an electrode and electrolyte template film, having a well for receiving the electrode, to the substrate. The method also adds a second electrolyte to the electrode and electrolyte template.Type: ApplicationFiled: September 24, 2018Publication date: January 24, 2019Applicant: Analog Devices, Inc.Inventors: Yingqi Jiang, Kuang L. Yang
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Patent number: 10102981Abstract: A method of fabricating a super-capacitor provides a substrate, and then adds an electrode and electrolyte template film, having a well for receiving the electrode, to the substrate. The method also adds a second electrolyte to the electrode and electrolyte template.Type: GrantFiled: August 26, 2014Date of Patent: October 16, 2018Assignee: Analog Devices, Inc.Inventors: Yingqi Jiang, Kuang L. Yang
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Patent number: 10081535Abstract: One or more conductive shielding plates are formed in a standard ASIC wafer top metal layer, e.g., for blocking cross-talk from MEMS device structure(s) on the MEMS wafer to circuitry on the ASIC wafer when the MEMS device is capped directly by the ASIC wafer in a wafer-level chip scale package. Generally speaking, a shielding plate should be at least slightly larger than the MEMS device structure it is shielding (e.g., a movable MEMS structure such as an accelerometer proof mass or a gyroscope resonator), and the shielding plate cannot be in contact with the MEMS device structure during or after wafer bonding. Thus, a recess is formed to ensure that there is sufficient cavity space away from the top surface of the MEMS device structure. The shielding plate is electrically conductive and can be biased, e.g., to the same voltage as the opposing MEMS device structure in order to maintain zero electrostatic attraction force between the MEMS device structure and the shielding plate.Type: GrantFiled: June 25, 2013Date of Patent: September 25, 2018Assignee: Analog Devices, Inc.Inventors: Li Chen, Thomas Kieran Nunan, Kuang L. Yang, Jeffrey A. Gregory
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Patent number: 10069441Abstract: An electric energy scavenger device has a housing forming an internal chamber with an internal wall, and a movable element contained within the internal chamber. The movable element is freely movable and unconnected to any other movable element within the internal chamber. Within the internal chamber, the device also has a plurality of piezoelectric charge conversion elements positioned along the internal wall. The plurality of piezoelectric charge conversion elements are positioned side-by-side to contact the movable element when the movable element moves within the internal chamber. In addition, the movable element is configured to simultaneously contact at least two of the plurality of side-by-side piezoelectric charge conversion elements. During use, the movable element is freely movable within the internal chamber in response to movement of the entire housing.Type: GrantFiled: October 21, 2015Date of Patent: September 4, 2018Assignee: Analog Devices, Inc.Inventors: Yingqi Jiang, Qian Zhang, Kuang L. Yang
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Patent number: 10050320Abstract: An integrated circuit has a substrate, a super-capacitor supported by the substrate, and a battery supported by the substrate. The super-capacitor includes a super-capacitor electrode and a shared electrode, and the battery has a battery electrode and the prior noted shared electrode. The super-capacitor and battery form at least a part of a monolithic integrated circuit.Type: GrantFiled: January 9, 2015Date of Patent: August 14, 2018Assignee: Analog Devices, Inc.Inventors: Yangqi Jiang, Kuang L. Yang
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Publication number: 20180172631Abstract: A microfluidic ion detector for detecting heavy metal ions in liquid and particulate matter from gas samples is described. The microfluidic ion detector includes a sample extraction structure for extracting sample ions from a sample liquid or extracting sample ions from the particulate matter of a gas sample, a separation structure for separating sample ions of different types once extracted, and a detection structure for detecting the sample ions. The microfluidic ion detector also includes a reference reservoir providing a reference ion against which the sample may be calibrated based on the operation of the separation structure. A portable, self-calibrating ion detector may be realized by including the described components on a single substrate.Type: ApplicationFiled: December 19, 2016Publication date: June 21, 2018Applicant: Analog Devices, Inc.Inventors: Chen Yang, Yumeng Liu, Li Chen, Kuang L. Yang
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Publication number: 20180087491Abstract: Microelectromechanical systems (MEMS) devices are described that include a proof mass movably connected to a substrate by accordion springs disposed on opposite sides of the proof mass, with a coupler coupling two of the accordion springs together. The coupler is a bar in some implementations, and may be rigid. The coupler therefore restricts the motion of the accordion springs relative to each other. In this manner, the motion of the proof mass may be restricted to preferred types and frequencies.Type: ApplicationFiled: September 27, 2016Publication date: March 29, 2018Applicant: Analog Devices, Inc.Inventors: Qian Zhang, Kuang L. Yang, Lei Gu
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Patent number: 9764946Abstract: A capped micromachined device has a movable micromachined structure in a first hermetic chamber and one or more interconnections in a second hermetic chamber that is hermetically isolated from the first hermetic chamber, and a barrier layer on its cap where the cap faces the first hermetic chamber, such that the first hermetic chamber is isolated from outgassing from the cap.Type: GrantFiled: October 24, 2013Date of Patent: September 19, 2017Assignee: Analog Devices, Inc.Inventors: Li Chen, Thomas Kieran Nunan, Kuang L. Yang
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Publication number: 20170237368Abstract: An exemplary energy harvester includes a piezoelectric diaphragm, an eccentric mass that rotates in response to external motion, and a piezoelectric stress inducer coupled with the eccentric mass and the piezoelectric diaphragm. The piezoelectric stress inducer deforms the piezoelectric diaphragm in response to rotational motion of the eccentric mass, causing the piezoelectric diaphragm to generate electrical energy.Type: ApplicationFiled: February 12, 2016Publication date: August 17, 2017Applicant: ANALOG DEVICES, INC.Inventors: Qian Zhang, Yingqi Jiang, Kuang L. Yang
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Publication number: 20170117824Abstract: An electric energy scavenger device has a housing forming an internal chamber with an internal wall, and a movable element contained within the internal chamber. The movable element is freely movable and unconnected to any other movable element within the internal chamber. Within the internal chamber, the device also has a plurality of piezoelectric charge conversion elements positioned along the internal wall. The plurality of piezoelectric charge conversion elements are positioned side-by-side to contact the movable element when the movable element moves within the internal chamber. In addition, the movable element is configured to simultaneously contact at least two of the plurality of side-by-side piezoelectric charge conversion elements. During use, the movable element is freely movable within the internal chamber in response to movement of the entire housing.Type: ApplicationFiled: October 21, 2015Publication date: April 27, 2017Inventors: Yingqi Jiang, Qian Zhang, Kuang L. Yang
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Patent number: 9601278Abstract: A method of producing a super-capacitor provides a first substrate having a first base, forms a first electrode on the first substrate, and forms a separator so that the electrode is between the first base and the first separator. The method also micromachines holes through the separator, forms a chamber, and adds electrolyte, having ions, to the chamber. The electrolyte is in contact with the first electrode within the chamber. In addition, the holes are sized to permit transmission of the ions of the electrolyte through the holes.Type: GrantFiled: September 22, 2014Date of Patent: March 21, 2017Assignee: Analog Devices, Inc.Inventors: Yingqi Jiang, Kuang L. Yang
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Patent number: 9556017Abstract: One or more stopper features (e.g., bump structures) are formed in a standard ASIC wafer top passivation layer for preventing MEMS device stiction vertically in integrated devices having a MEMS device capped directly by an ASIC wafer. A TiN coating may be used on the stopper feature(s) for anti-stiction. An electrical potential may be applied to the TiN anti-stiction coating of one or more stopper features.Type: GrantFiled: June 25, 2013Date of Patent: January 31, 2017Assignee: Analog Devices, Inc.Inventors: Li Chen, Thomas Kieran Nunan, Kuang L. Yang
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Patent number: 9505614Abstract: A microphone system includes a diaphragm suspended by springs and including a sealing layer that seals passageways which, if left open, would degrade the microphone's frequency response by allowing air to pass from one side of the diaphragm to the other when the diaphragm is responding to an incident acoustic signal. In some embodiments, the sealing layer may include an equalization aperture to allow pressure to equalize on both sides of the diaphragm.Type: GrantFiled: January 8, 2015Date of Patent: November 29, 2016Assignee: INVENSENSE, INC.Inventors: Fang Liu, Kuang L. Yang
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Publication number: 20160204492Abstract: An integrated circuit has a substrate, a super-capacitor supported by the substrate, and a battery supported by the substrate. The super-capacitor includes a super-capacitor electrode and a shared electrode, and the battery has a battery electrode and the prior noted shared electrode. The super-capacitor and battery form at least a part of a monolithic integrated circuit.Type: ApplicationFiled: January 9, 2015Publication date: July 14, 2016Inventors: Yingqi Jiang, Kuang L. Yang
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Publication number: 20160104581Abstract: A super-capacitor has a substrate, at least two porous electrodes integrated within the substrate, and an electrolyte extending between the at least two porous electrodes. The electrolyte is integrated with the substrate, and is positioned within the substrate. The at least two porous electrodes and electrolyte are configured to store charge as a super-capacitor.Type: ApplicationFiled: October 8, 2014Publication date: April 14, 2016Inventors: Yingqi Jiang, Kuang L. Yang