Patents by Inventor Yongqian Tang
Yongqian Tang 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: 20230359070Abstract: An optical structure includes an input waveguide, a beam splitter, a first arm, a second arm, a beam combiner, and an output waveguide. The first arm and the second arm each include a conventional waveguide region and a modulation waveguide region. The modulation waveguide region of the first arm includes a first modulation waveguide region and a second modulation waveguide region. The modulation waveguide region of the second arm includes a third modulation waveguide region and a fourth modulation waveguide region. The electrical structure includes a traveling wave electrode including a ground-signal-signal-ground electrode structure. The traveling wave electrode includes a signal input region, a modulation electrode region, and a matching resistor region. The modulation electrode region includes a first modulation electrode region and a second modulation electrode region. The first modulation electrode region is connected to the second modulation electrode region.Type: ApplicationFiled: July 20, 2022Publication date: November 9, 2023Inventors: Weihua GUO, Yongqian TANG, Qiaoyin LU
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Publication number: 20230213792Abstract: An electro-optic modulator includes an optical structure and an electrical structure. The optical structure includes an input waveguide, a beam splitter, a first waveguide arm, a second waveguide arm, a beam combiner, and an output waveguide; each of the first waveguide arm and the second waveguide arm includes a conventional waveguide region. The first waveguide arm further includes a first modulating region, a second modulating region, and a third modulating region. The second waveguide arm further includes a fourth modulating region, a fifth modulating region, and a sixth modulating region; the electrical structure includes a traveling wave electrode including a signal-ground-signal electrode structure. The traveling wave electrode further includes a signal input region, a modulating electrode region, and a matched resistor region. The modulating electrode region includes a first signal electrode, a ground electrode, and a second signal electrode.Type: ApplicationFiled: January 6, 2023Publication date: July 6, 2023Inventors: Weihua GUO, Yongqian TANG, Qiaoyin LU
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Patent number: 11474635Abstract: An input device comprises a plurality of sensor electrodes and a processing system coupled to the plurality of sensor electrodes. The processing system comprises a sensor driver. The sensor driver comprises clock synchronization circuitry, a blocking pulse generator, and a sensor module. The clock synchronization circuitry is configured to receive an external clock signal, and synchronize an internal clock signal with the external clock signal. The blocking pulse generator is configured to generate a first blocking pulse based on the internal clock signal. The sensor module comprises sensing circuitry and is configured to pause acquisition of a resulting signal from a sensor electrode based on the first blocking pulse.Type: GrantFiled: October 19, 2020Date of Patent: October 18, 2022Assignee: Synaptics IncorporatedInventors: Guozhong Shen, Xiaodan Mei, Yongqian Tang, Ozan Ersan Erdogan, Joseph Kurth Reynolds
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Publication number: 20210117065Abstract: An input device comprises a plurality of sensor electrodes and a processing system coupled to the plurality of sensor electrodes. The processing system comprises a sensor driver. The sensor driver comprises clock synchronization circuitry, a blocking pulse generator, and a sensor module. The clock synchronization circuitry is configured to receive an external clock signal, and synchronize an internal clock signal with the external clock signal. The blocking pulse generator is configured to generate a first blocking pulse based on the internal clock signal. The sensor module comprises sensing circuitry and is configured to pause acquisition of a resulting signal from a sensor electrode based on the first blocking pulse.Type: ApplicationFiled: October 19, 2020Publication date: April 22, 2021Inventors: Guozhong Shen, Xiaodan Mei, Yongqian Tang, Ozan Ersan Erdogan, Joseph Kurth Reynolds
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Patent number: 10922515Abstract: An integrated sensing device comprising a force sensor and fingerprint sensor disposed on different portions of a flexible circuit. The fingerprint sensor is disposed on a first side of a first portion of the flexible circuit and the force sensor is disposed on a second portion of the flexible circuit. The flexible circuit is configured such that the first portion is over the second portion. The fingerprint sensor includes fingerprint sensor electrodes disposed on the first side of the first portion. The force sensor comprises a compressible layer disposed between a second side of the first portion and a first side of the second portion, and one or more one force electrodes.Type: GrantFiled: April 13, 2018Date of Patent: February 16, 2021Assignee: SYNAPTICS INCORPORATEDInventors: Guozhong Shen, Taehee Cho, Yongqian Tang, Mandar Kulkarni, Ozan Ersan Erdogan, Shubha Ramakrishnan, Pascale El Kallassi
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Patent number: 10838547Abstract: An input device comprises a plurality of sensor electrodes and a processing system coupled to the plurality of sensor electrodes. The processing system comprises a sensor driver. The sensor driver comprises clock synchronization circuitry, a blocking pulse generator, and a sensor module. The clock synchronization circuitry is configured to receive an external clock signal, and synchronize an internal clock signal with the external clock signal. The blocking pulse generator is configured to generate a first blocking pulse based on the internal clock signal. The sensor module comprises sensing circuitry and is configured to pause acquisition of a resulting signal from a sensor electrode based on the first blocking pulse.Type: GrantFiled: October 16, 2019Date of Patent: November 17, 2020Assignee: SYNAPTICS INCORPORATEDInventors: Guozhong Shen, Xiaodan Mei, Yongqian Tang, Ozan Ersan Erdogan, Joseph Kurth Reynolds
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Patent number: 10679034Abstract: An input device includes sensing pixels, each sensing pixel including a photodiode, and a gate driver circuit controlling operation of the sensing pixels. The gate driver circuit includes a set of cascaded gate driver units. Each of the cascaded gate driver units is associated with a subset of the sensing pixels, controlling an operation of the subset of the sensing pixels. The set of cascaded gate driver units output, during a reset phase of the input device, a global reset gate control signal to the sensing pixels in response to a clock signal. Each of the cascaded gate driver units sequentially output, during an operating phase of the input device, an operating gate control signal to the associated subset of the sensing pixels.Type: GrantFiled: February 8, 2019Date of Patent: June 9, 2020Assignee: Synaptics IncorporatedInventors: Guozhong Shen, Yongqian Tang, Ozan Erdogan
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Patent number: 10572707Abstract: A transparent sensor pattern suitable for sensing fingerprint information in a display area is disclosed. The sensor pattern includes a receiver electrode extending in a first direction and a transmitter electrode extending in a second direction different from the first direction. The receiver electrode includes a conductive trace made from an opaque metal material and the receiver electrode is substantially free of transparent conductive material. The transmitter electrode includes a conductive segment made from a transparent conductive material. A dielectric material is disposed between the receiver electrode and the transmitter electrode, and the dielectric material electrically insulates the receiver electrode from the transmitter electrode.Type: GrantFiled: February 9, 2017Date of Patent: February 25, 2020Assignee: Synaptics IncorporatedInventors: Guozhong Shen, Patrick Smith, Yongqian Tang, Jim Aroyan, Bob Lee Mackey
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Publication number: 20190377924Abstract: An input device includes sensing pixels, each sensing pixel including a photodiode, and a gate driver circuit controlling operation of the sensing pixels. The gate driver circuit includes a set of cascaded gate driver units. Each of the cascaded gate driver units is associated with a subset of the sensing pixels, controlling an operation of the subset of the sensing pixels. The set of cascaded gate driver units output, during a reset phase of the input device, a global reset gate control signal to the sensing pixels in response to a clock signal. Each of the cascaded gate driver units sequentially output, during an operating phase of the input device, an operating gate control signal to the associated subset of the sensing pixels.Type: ApplicationFiled: February 8, 2019Publication date: December 12, 2019Applicant: Synaptics IncorporatedInventors: Guozhong Shen, Yongqian Tang, Ozan Erdogan
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Publication number: 20180300522Abstract: An integrated sensing device comprising a force sensor and fingerprint sensor disposed on different portions of a flexible circuit. The fingerprint sensor is disposed on a first portion of the flexible circuit and the force sensor is disposed on a second portion and the flexible circuit is configured such that the first portion is over the second portion. The force sensor comprises a compressible layer and one or more one force electrodes, where the compressible layer is disposed between the first and second portions.Type: ApplicationFiled: April 13, 2018Publication date: October 18, 2018Inventors: Guozhong SHEN, Taehee CHO, Yongqian TANG, Mandar KULKARNI, Ozan Ersan ERDOGAN, Shubha RAMAKRISHNAN, Pascale EL KALLASSI
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Patent number: 9817506Abstract: A sensor array for capacitive sensing includes: a plurality of sensor electrodes, the plurality of sensor electrodes comprising: a plurality of transmitter electrodes and a plurality of receiver electrodes, wherein the plurality of receiver electrodes include a plurality of imaging receiver electrodes and a reference receiver electrode, and wherein each of the plurality of receiver electrodes overlaps with the plurality of transmitter electrodes; wherein each of the plurality of transmitter electrodes is configured to be driven by sensing signals and each of the plurality of receiver electrodes is configured to receive detected signals corresponding to the sensing signals driven onto the transmitter electrodes; and conductive shielding disposed proximate to the reference receiver electrode.Type: GrantFiled: March 31, 2015Date of Patent: November 14, 2017Assignee: Synaptics IncorporatedInventors: Guozhong Shen, Ozan Ersan Erdogan, Yongqian Tang
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Publication number: 20170228573Abstract: A transparent sensor pattern suitable for sensing fingerprint information in a display area is disclosed. The sensor pattern includes a receiver electrode extending in a first direction and a transmitter electrode extending in a second direction different from the first direction. The receiver electrode includes a conductive trace made from an opaque metal material and the receiver electrode is substantially free of transparent conductive material. The transmitter electrode includes a conductive segment made from a transparent conductive material. A dielectric material is disposed between the receiver electrode and the transmitter electrode, and the dielectric material electrically insulates the receiver electrode from the transmitter electrode.Type: ApplicationFiled: February 9, 2017Publication date: August 10, 2017Inventors: Guozhong Shen, Patrick Smith, Yongqian Tang, Jim Aroyan, Bob Lee Mackey
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Publication number: 20160291765Abstract: A sensor array for capacitive sensing includes: a plurality of sensor electrodes, the plurality of sensor electrodes comprising: a plurality of transmitter electrodes and a plurality of receiver electrodes, wherein the plurality of receiver electrodes include a plurality of imaging receiver electrodes and a reference receiver electrode, and wherein each of the plurality of receiver electrodes overlaps with the plurality of transmitter electrodes; wherein each of the plurality of transmitter electrodes is configured to be driven by sensing signals and each of the plurality of receiver electrodes is configured to receive detected signals corresponding to the sensing signals driven onto the transmitter electrodes; and conductive shielding disposed proximate to the reference receiver electrode.Type: ApplicationFiled: March 31, 2015Publication date: October 6, 2016Inventors: Guozhong Shen, Ozan Ersan Erdogan, Yongqian Tang