Using Capacitive Type Measurement Patents (Class 324/658)
  • Patent number: 10527460
    Abstract: A gear position detection device for detecting a gear having multiple fingers is provided. The detection device includes a substrate, a control chip, and a drive line, a sense line, a first drive electrode, a second drive electrode, a first sense electrode and a second sense electrode formed on the substrate. The first and second drive electrodes are connected to the drive line to receive a drive signal. The first and second sense electrodes form induced electric field respectively with the first and second drive electrodes, and respectively output a first detected signal and a second detected signal via the sense line. The control chip outputs the drive signal via the drive line, receives the first and second detected signals via the sense line, calculate a differential signal between the first and second detected signals, and count a number of high levels of the differential signal to count a finger number.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: January 7, 2020
    Assignee: PIXART IMAGING INC.
    Inventor: Masatoshi Yamai
  • Patent number: 10521056
    Abstract: The present invention provides a touch screen panel and a display device which include a plurality of first electrodes arranged in a first direction in parallel; a plurality of second electrodes arranged in a second direction to intersect with the first electrodes; and a cover, wherein a width of at least one electrode of the first electrodes is different from widths of the other first electrodes, a width of at least one electrode of the second electrodes is different from widths of the other second electrodes, or the width of the at least one electrode of the first electrodes is different from the widths of the other first electrodes and the width of the at least one electrode of the second electrodes is different from the widths of the other second electrodes.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: December 31, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventor: SangWoo Seo
  • Patent number: 10514786
    Abstract: A touch detection method includes performing a detection method to obtain a signal point along with a signal value and a signal state, wherein the signal state has a positive state generated by proximity touch and a negative state by generated by impurity touch; checking a previous signal state generated by previous detection method and a current signal state generated by current detection method; comparing the previous signal state and the current signal state, and counting a number when the signal states of the previous signal state and the current signal are the same; determining if the number is greater than a threshold; and proceeding a base signal updating when the number is greater than the threshold.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: December 24, 2019
    Assignees: IMAGINATION BROADWAY LTD., SALT INTERNATIONAL CORP.
    Inventors: Ko-Hao Ting, Shih-Chieh Wei
  • Patent number: 10514446
    Abstract: Systems and methods for operating an array of micro-mirror assemblies are provided. In one example, an apparatus comprises: a light source; a receiver; and a semiconductor integrated circuit comprising a microelectromechanical system (MEMS) and a controller, the MEMS comprising an array of micro-mirror assemblies, each micro-mirror assembly comprising: a micro-mirror connected to a substrate of the semiconductor integrated circuit via an elastic connection structure and rotatable around the connection structure to perform at least one of: reflect light from the light source along an output projection path, or reflect input light propagating along an input path to the receiver. The controller is configured to generate a control signal to rotate the micro-mirrors based on a target rotation angle and a spring stiffness of one or more connection structures of the array of micro-mirror assemblies.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: December 24, 2019
    Assignee: DiDi Research America, LLC
    Inventors: Youmin Wang, Qin Zhou
  • Patent number: 10514403
    Abstract: A circuit and method of measuring capacitance are disclosed. The capacitance measuring circuit includes an integrator circuit, a first control circuit, a second control circuit and a processor circuit. The capacitance measuring method includes steps of: using a current source and a charging/discharging time to generate a first charge amount related to a second charge amount of a capacitor to be detected; generating a third charge amount and generating a fourth charge amount according to the first charge amount and the third charge amount; generating a fifth charge amount and generating a remaining charge amount according to the fifth charge amount and fourth charge amount; using an integrator to convert the remaining charge amount into a first voltage and generating a judging result according to whether the first voltage meets a second voltage; and calculating the judging result to obtain a capacitance variation of the capacitor to be detected.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: December 24, 2019
    Assignee: Raydium Semiconductor Corporation
    Inventors: Yu Kuang, Tsung-Yi Su, Shih-Chin Chang
  • Patent number: 10511923
    Abstract: The disclosure provides a system, comprising: a MEMS capacitive transducer, comprising one or more first capacitive plates coupled to a first node and one or more second capacitive plates coupled to a second node; biasing circuitry coupled to the first node, operable to provide a biasing voltage to the one or more first capacitive plates; and test circuitry coupled to the second node, operable to: selectively apply one or more current sources to the second node, so as to charge and discharge the MEMS capacitive transducer and so vary a signal based on a voltage at said second node between an upper value and a lower value; determine a parameter that is indicative of a time period of the variation of the signal; and determine a capacitance of the MEMS capacitive transducer based on the parameter that is indicative of the time period.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: December 17, 2019
    Assignee: Cirrus Logic, Inc.
    Inventors: Jean Pierre Lasseuguette, Aleksey Sergeyevich Khenkin, Axel Thomsen
  • Patent number: 10503292
    Abstract: A display device integrated with touch function and a driving method thereof, the display device comprising: a display unit (101); a touch detection circuit (102) configured to conduct touch detection, and generate a plurality of touch detection signals; and a driving unit (105) configured to simultaneously driving a data refresh of the display unit (101) and the touch detection of the touch detection circuit (102), wherein region for data refresh and region for touch detection do not overlap at the same time period. The present disclosure prolongs the charging time for the display pixels and solves the problem of insufficient charging time of the integrated touch high resolution display device by a simultaneous touch and the display driving. In the meantime, by incorporating a reference unit, a reference voltage which is not affected by touching and can reflect in real time the signal interferences caused by display driving (namely, data refresh) is obtained.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: December 10, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Guangliang Shang, Jiayang Zhao, Haoliang Zheng, Mingfu Han, Feng Liao
  • Patent number: 10505539
    Abstract: The invention relates to an oscillator comprising a resonant circuit having at least one inductor and one capacitor and having a feedback amplifier, wherein there is at least one trimming resistor in a feedback circuit of the amplifier. The oscillator is characterized in that there is an electronic switching device for alternately connecting and disconnecting the trimming resistor, in that a trimming circuit is formed by the trimming resistor and the electronic switching device, in that there is a drive device for driving the electronic switching device, in that the electronic switching device, together with the drive device, is designed to alternately connect and disconnect the trimming resistor in a switching sequence, and in that an average time value of the electrical resistor of the trimming circuit, which is active in an oscillator mode, is defined by the switching sequence.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: December 10, 2019
    Assignee: Pepperl + Fuchs GmbH
    Inventor: Thomas Kühn
  • Patent number: 10481723
    Abstract: Disclosed herein is a touch screen controller that calculates a variance of an island in acquired touch data values. Where the variance exceeds a variance threshold, the island is validated as a representing touch. Where the variance does not exceed the variance threshold, whether the island represents a touch or a hover is determined by calculating a sharpness by applying weights to nodes of the island, where neighboring nodes adjacent to a peak node are weighted less than non-neighboring nodes not adjacent to the peak node. An island strength threshold is determined as a function of a product of the variance and the sharpness. It is determined that the island represents a touch where a highest touch data value of the island is greater than the island strength threshold, and a hover where the highest touch data value of the island is less than the island strength threshold.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: November 19, 2019
    Assignee: STMicroelectronics Asia Pacific Pte Ltd
    Inventors: Manivannan Ponnarasu, Mythreyi Nagarajan
  • Patent number: 10474302
    Abstract: A touch panel device that detects a touch input at a touch panel including a plurality of electrodes arrayed in X and Y directions, calculates a width corresponding an object approaching the touch panel based on an output distribution of capacitance values from the touch panel, and determines whether an input operation corresponding to the object is valid based on the calculated width of the object.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: November 12, 2019
    Assignee: SONY CORPORATION
    Inventors: Kouichiro Takashima, Anatol Ward
  • Patent number: 10474280
    Abstract: A touch sensing system is disclosed. The touch sensing system includes an active stylus pen that generates a first pen driving signal for detecting a touch input in synchronization with a touch driving signal input from a touch screen and a second pen driving signal for detecting an additional input related to an additional function of the active stylus pen in a touch driving period and outputs the first and second pen driving signals to the touch screen; and a touch driving device that applies the touch driving signal to the touch screen, senses the first pen driving signal in a first period of the touch driving period, and senses the second pen driving signal in a second period of the touch driving period.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: November 12, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Hyunguk Jang, Cheolse Kim, Sungchul Kim, Sanghyuck Bae, Sungsu Han, Suyun Ju, Doyoung Jung
  • Patent number: 10473728
    Abstract: Prior art electronic power supplies having distributed energy stores and/or the possibility to dynamically modify the connectivity of individual stores require complex monitoring of the input and output currents to and from the individual energy stores, often using a multitude of sensors, in order to allow for unrestricted operation. Examples of such power supplies include in particular modular multilevel converters and switched-capacitor circuits. The preen invention describes a possibility to determine the states of charge and energy levels of the energy stores using a small number of measuring systems.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: November 12, 2019
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventor: Stefan Goetz
  • Patent number: 10466847
    Abstract: A capacitance sensing circuit includes: a front-end circuit, a first subtracting and summing circuit and a capacitance judging circuit; wherein the front-end circuit is coupled to the detection circuit; the first subtracting and summing circuit is coupled between the front-end circuit and the capacitance judging circuit, and includes: a subtracting unit; a summing unit, coupled to the subtracting unit; a first converter, coupled between the summing unit and the capacitance judging unit; and a second converter, coupled between the first converter and the subtracting unit; and the capacitance judging circuit is configured to judge a capacitance change of the detection capacitor. According to the present application, resistance against noise may be improved.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: November 5, 2019
    Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
    Inventors: Fuchiang Yang, Yanan Wen, Yingsi Liang
  • Patent number: 10444915
    Abstract: A low-latency touch sensor is disclosed for use in connection with a touch surface having first and second conductors sensitive to changes in coupling therebetween as a result of touch (and/or near-touch). A signal generator generates unique orthogonal signals, a transmitter transmits the orthogonal signals on each of the first conductors. Receivers connected to the second conductors receive signals during a measurement period. The signals measured during the measurement period are processed to determine, for each measurement period, and for each of the second conductors, a signal strength corresponding to each of the unique orthogonal signals. The signal strengths can be used as a basis to determine touch events.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: October 15, 2019
    Assignee: Tactual Labs Co.
    Inventor: Daniel Wigdor
  • Patent number: 10436733
    Abstract: A capacitive imaging method or device using an array of row electrodes 101 and column electrodes 102 on a substrate 100, wherein cross-capacitance between row and column electrodes is obtained from row electrode 101 self-capacitance measured with the remaining electrodes grounded, column electrode 102 self-capacitance measured with the remaining electrodes grounded, and combined row and column electrode self-capacitance measured with the remaining electrodes grounded. A preferred embodiment is a hand-held wall scanner for detecting hidden features having a two-dimensional display the size of the array and located over it. Hidden features influencing row-to-column cross-capacitances are thus imaged in real size and at their real location.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: October 8, 2019
    Assignee: HEMY8 SA
    Inventor: Hans Ulrich Meyer
  • Patent number: 10405582
    Abstract: Apparatuses, including systems and devices (“vaporizers”), for vaporizing material to form an inhalable aerosol that include capacitive lips sensing to regulate the temperature of the vaporizer, including transiently boosting the temperature. Methods of operating a vaporizer having a capacitive lip sensor are also described.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: September 10, 2019
    Assignee: PAX Labs, Inc.
    Inventors: Nicholas J. Hatton, James Monsees, Adam Bowen
  • Patent number: 10372283
    Abstract: According to a first aspect of the present disclosure, an electronic device for use in a touch-based user interface is provided, the electronic device comprising a first capacitor, a second capacitor, a third capacitor, and an analog-to-digital converter, wherein: the first capacitor and the second capacitor are switchably coupled to each other; the first capacitor is switchably coupled to an input of the analog-to-digital converter; the second capacitor is coupled to the input of the analog-to-digital converter; the third capacitor is coupled to the first capacitor; the third capacitor is switchably coupled to the second capacitor; the third capacitor is switchably coupled to the input of the analog-to-digital converter. According to a second aspect of the present disclosure, a corresponding method of manufacturing an electronic device for use in a touch-based user interface is conceived.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: August 6, 2019
    Assignee: NXP B.V.
    Inventor: Thomas Suwald
  • Patent number: 10365475
    Abstract: An oscillating structure with piezoelectric actuation includes first and second torsional elastic elements constrained to respective portions of a fixed supporting body and defining an axis of rotation. A mobile element is positioned between, and connected to, the first and second torsional elastic elements by first and second rigid regions. A first control region is coupled to the first rigid region and includes a first piezoelectric actuator. A second control region is coupled to the second rigid region and includes a second piezoelectric actuator. The first and second piezoelectric actuators are configured to cause local deformation of the first and second control regions to induce a torsion of the first and second torsional elastic elements.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: July 30, 2019
    Assignee: STMicroelectronics S.r.l.
    Inventors: Roberto Carminati, Massimiliano Merli, Sebastiano Conti
  • Patent number: 10338720
    Abstract: A pressure detection structure and a touch device are disclosed. The structure is mounted on a middle frame of the touch device and includes a cover, a display device and a pressure sensor. The display device is arranged below the cover, and includes a display module. The pressure sensor is arranged in the display device; any electrically conductive member in the display device or the middle frame which is electrically conductive is used as a reference electrode; and a variable gap is present between the pressure sensor and the reference electrode, and the pressure sensor outputs a pressure signal according to variation of capacitance between a sensing electrode thereof and the reference electrode. According to the present application, pressure detection may be carried out accurately, and thus reliability of products is enhanced.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: July 2, 2019
    Assignee: Shenzhen Goodix Technology Co., Ltd.
    Inventors: Dafei Wen, Wu Liu, Rui Ran
  • Patent number: 10330716
    Abstract: An earth fault detector has a controller, a capacitor, a positive side power line connected to a positive side of the high voltage battery, a negative side power line a negative side thereof, a positive second side resistance, a negative second side resistance, a positive side C contact switch, and a negative side C contact switch. The positive side C contact switch switches a connection destination of a first end of the detection capacitor to either a path including the positive side power line or a path including the positive second side resistance. The negative side C contact switch switches a connection destination of a second end of the detection capacitor to either a path including the negative side power line or a path including the negative second side resistance. The controller controls switching of a first and second measurement modes.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: June 25, 2019
    Assignee: YAZAKI CORPORATION
    Inventors: Takeshi Iwanabe, Ryosuke Arigaya, Yoshihiro Kawamura
  • Patent number: 10317443
    Abstract: An apparatus for measuring the capacitance to be measured is proposed. It comprises a first sine-wave oscillator, the measuring oscillator, and a second sine-wave oscillator, the reference oscillator. The frequency of the output signal of the measuring oscillator, hereinafter also referred to as measuring frequency, is dependent on the capacitance to be measured. The frequency of the output signal of the reference oscillator, hereinafter also referred to as reference frequency, is dependent on a reference capacitance. The apparatus comprises a sub-apparatus which produces the ratio of the frequency value of the frequency of the output signal of the reference oscillator and the frequency value of the frequency of the output signal of the measuring oscillator and subsequently squares this ratio to provide the result of this squaring as a measured value.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: June 11, 2019
    Assignee: Elmos Semiconductor AG
    Inventor: Norbert Raehse
  • Patent number: 10317251
    Abstract: A device for actuating a door of a vehicle in a contact-free manner includes a capacitive proximity sensor. The proximity sensor has at least one sensor electrode for emitting an electric detection field in a detection area in front of the sensor electrode. An insulated electric conductor is arranged in front of the sensor electrode for shaping the detection field.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: June 11, 2019
    Assignee: Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Hallstadt
    Inventors: Felix Sterk, Udo Geuther
  • Patent number: 10303317
    Abstract: A touch sensor with a circularly polarizing plate includes an electrostatic capacitance type touch sensor. A circularly polarizing plate is arranged on a visible side of the electrostatic capacitance type touch sensor. The sensor includes a transparent substrate and a plurality of first electrodes individually formed in a strip shape on the transparent substrate. The sensor additionally includes a plurality of second electrodes formed on a surface of the transparent substrate opposite to a surface on which the first electrodes are formed. The second electrodes have a strip shape in a manner of intersecting with the first electrodes. The first electrodes are made of a metal mesh. The second electrodes are made of a plurality of conductive nanowires, existing in a connecting state respectively so as to be conductively connected, and a binder resin holding the plurality of conductive nanowires on the second transparent substrate.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: May 28, 2019
    Assignee: NISSHA CO., LTD.
    Inventors: Kazuhiro Nishikawa, Ryomei Omote, Takao Hashimoto, Takeshi Nishimura
  • Patent number: 10289246
    Abstract: The present disclosure provides an integrated touch-control display panel and a touch-control display device. The integrated touch-control display panel includes a first substrate and a second substrate arranged opposite to the first substrate. The first substrate and the second substrate each includes a display region and a non-display region surrounding the display region. In the display region, a plurality of touch-control driving electrodes extending along the first direction and sequentially arranged along the second direction are disposed on the first substrate, and a plurality of touch-control sensing electrodes extending along the second direction and sequentially arranged along the first direction are disposed on the second substrate. The first direction is perpendicular to the second direction. A shielding structure is disposed between two adjacent touch-control driving electrodes.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: May 14, 2019
    Assignees: Xiamen Tianma Micro-electronics Co., Ltd., Tianma Micro-electronics Co., Ltd.
    Inventors: Zhilong Zhuang, Jiancai Huang, Yumin Xu
  • Patent number: 10288467
    Abstract: A capacitance measurement device includes a bridging capacitor connected in series to another one of the opposite end sides of a measurement-objective capacitance, and a charging/discharging switching element connected in series to the other one of the opposite end sides of the measurement-objective capacitance, and connected in parallel to the bridging capacitor. The measurement-objective capacitance is discharged when the charging/discharging switching element is turned to the closed state, and is charged when the charging/discharging switching element is turned to the opened state. A gauge gains an equivalent value for the measurement-objective capacitance, based on a potential at the other one of the opposite end sides of the measurement-objective capacitance, at the time of the charging step.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: May 14, 2019
    Assignee: Sumitomo Riko Company Limited
    Inventors: Tetsuyoshi Shibata, Ichinosuke Maeda, Yuki Saito
  • Patent number: 10282586
    Abstract: An apparatus for realizing a touch button and fingerprint identification, includes: a fingerprint identification sensor, disposed below a cover glass of a touch screen of a terminal device; and a capacitive button sensor, disposed below the cover glass and located on at least one side of the fingerprint identification sensor.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: May 7, 2019
    Assignee: Xiaomi Inc.
    Inventors: Zhongsheng Jiang, Kun Yang, Jun Tao
  • Patent number: 10268314
    Abstract: A signal processing circuit of a touch device including an operational amplifier, a feedback resistor and a step current circuit is provided. The feedback resistor connects between a negative input and an output terminal of the operational amplifier. The step current circuit is coupled to the negative input of the operational amplifier and configured to provide or draw a step current to reduce the current flowing through the feedback resistor so as to compensate the voltage offset of the operational amplifier.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: April 23, 2019
    Assignee: PIXART IMAGING INC.
    Inventor: Wooi-Kip Lim
  • Patent number: 10258945
    Abstract: A mechanical resonant system includes a voice coil actuator, a payload mass (110A,110B), a driver mass (120A,120B,120C) and a frame mass (130A,130B,130C). The voice coil actuator includes a bobbin (160), an electrical conductor (170) and a magnet assembly (180,190). The bobbin is made from a material that is electrically nonconductive. The electrical conductor is coupled to the bobbin. The magnet assembly has a housing (180) and a magnet (190) coupled to the housing. At least a portion of the bobbin (160) and at least a portion of the electrical conductor (170) are configured to be positioned within a gap formed by the magnet (190) and the housing (180). The bobbin and the magnet assembly are configured to oscillate when an alternating current is applied to the electrical conductor. The payload mass (110A,110B) is coupled to one of the bobbin and the housing. The driver mass (120A,120B,120C) is coupled to the other of the bobbin and the housing.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: April 16, 2019
    Assignee: Resodyn Corporation
    Inventors: Peter Lucon, Brian Jay Seaholm
  • Patent number: 10248259
    Abstract: An object identification method of touch system is disclosed. The object identification method includes: repeating an object measurement to obtain a plurality of object signals; conducting a liquid measurement to obtain a liquid signal; determining whether the value of the liquid signal is greater than a first default value or less than a second default value, wherein the first default value is larger than the second default value; proceeding with an elimination step if the value of the liquid signal is greater than the first default value; and, proceeding with a start step if the value of the liquid signal is less than the second default value.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: April 2, 2019
    Assignees: IMAGINATION BROADWAY LTD., SALT INTERNATIONAL CORP.
    Inventors: Shang-Li Lee, Zong-Bin Liao, Ko-Hao Ting
  • Patent number: 10242172
    Abstract: To provide an authentication device capable of performing authentication accurately even when biological information changes with time. An authentication device (1) includes an acquisition unit (2) configured to acquire biological information about a user; an authentication processing unit (4); a storage unit (6) configured to store standard biological information and basic biological information; and a standard biological information updating unit (8). When a difference between the standard biological information and current biological information is less than a first threshold, the authentication processing unit (4) determines that authentication is established. When the authentication is established by the authentication processing unit (4), the standard biological information updating unit (8) updates the standard biological information according to the current biological information for which the authentication is established, based on the basic biological information and a second threshold.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: March 26, 2019
    Assignee: Renesas Electronics Corporation
    Inventor: Hiroshi Yagi
  • Patent number: 10240965
    Abstract: A capacitive fluid sensor is provided having a substrate having upper and lower ends and conductive members supported by the substrate. The conductive members are provided between the upper and lower ends of the substrate. The conductive members include an upper end conductive member, a lower end conductive member, and at least one included conductive member which is positioned between the upper and lower end conductive members. Each conductive member is separated from every other one of the members, thereby providing that each member has distinct upper and lower ends and acts as an independent sensor. At least one pair of proximally positioned members are positioned relative to each other such that the distinct lower end of one of the pair of conductive members is positioned closer to the lower end of the substrate than is the distinct upper end of the other one of the pair of conductive members.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: March 26, 2019
    Assignee: Molex, LLC
    Inventors: Arun Kumar, Steven John Fulton
  • Patent number: 10234997
    Abstract: Discussed is a touch sensor for use in an in-cell type touch sensor panel that includes a plurality of sensor elements, wherein each sensor element has a shape such that a maximum diameter of a circle able to be inscribed in the sensor element is smaller than a diameter of a circle inscribed in a square having the same area as the sensor element.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: March 19, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Takayuki Suzuki
  • Patent number: 10228395
    Abstract: In a non-contact voltage measurement device that can precisely measure an alternating-current voltage with a simple structure, a first capacitor and second capacitor, having mutually correlated capacitances, are respectively formed between a first electrode and a conductor and between a second electrode and the conductor. An alternating-current signal is given between the first electrode and a first reference potential. When a switch is off, a first charge detecting signal matching charges accumulated in the second capacitor by the alternating-current signal is created with the second electrode kept at the first reference potential. When the switch is on, a second charge detecting signal matching charges accumulated in the second capacitor by the alternating-current voltage is created with the second electrode kept at a second reference potential.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: March 12, 2019
    Assignee: Alps Electric Co., Ltd.
    Inventor: Hiroyuki Hebiguchi
  • Patent number: 10229306
    Abstract: A fingerprint recognition device includes: an integrated circuit electrically connected to at least one sensor electrode; a first circuit board located at an upper portion of the integrated circuit and provided with the at least one sensor electrode; a second circuit board electrically connected to the first circuit board and located at under the integrated circuit; a molding layer provided under the first circuit board to surround the integrated circuit so as to protect the integrated circuit from the outside; and a connection part electrically connecting the first circuit board and the second circuit board.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: March 12, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Il Kim, Young Jun Moon, Tae Sang Park, Kyung Woon Jang, Seung Hee Oh, Chang Kyu Chung, Dong Yul Lee
  • Patent number: 10227797
    Abstract: A door handle device for a vehicle includes: an antenna and a DC driving detection member capable of detecting approach or contact of a person, the antenna and the DC driving detection member being electrically connected to a drive control portion via a first connection line and a second connection line, and being connected in parallel to each other. The antenna is driven by an AC voltage supplied from the drive control portion, the first connection line and the second connection line are respectively connected to a positive DC power source and a ground, and thereby the detection member is driven by a DC voltage supplied from the drive control portion, the antenna includes a resonance capacitor and an antenna coil which are connected in series. The detection member includes a power source terminal, and a ground terminal.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: March 12, 2019
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Takaaki Koizumi, Takehiro Tabata
  • Patent number: 10222241
    Abstract: A capacitance measurement circuit for determining a capacitance of a guard-sense capacitive sensor includes a microcontroller that uses a combination of several synchronized PWM outputs for generating a low distortion sine wave. The sine wave is used as a guard voltage for the guard electrode of the capacitive sensor. The capacitance value of an unknown capacitor is measured by impinging the guard voltage on the sense electrode of the capacitive sensor by a modified sigma-delta modulator unit. The digital output of the sigma-delta modulator unit is first multiplied by an XOR gate before being routed into a decimator/low pass filter. The second input of the XOR gate is driven by a square wave from a square wave generator with the same frequency as the guard voltage, but with a substantially 90° phase shift. The output of the decimator/low pass filter is indicative of the capacitance value of the unknown capacitor.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: March 5, 2019
    Assignee: IEE International Electronics & Engineering S.A.
    Inventor: Laurent Lamesch
  • Patent number: 10198100
    Abstract: An electrode device for a capacitive sensor device and a circuit arrangement for a capacitive sensor device for the operation of an electrode device are provided, wherein the electrode device has a first electrode structure with at least one transmitting electrode and at least one receiving electrode, and a second electrode structure with at least one field sensing electrode, wherein the electrode device or the capacitive sensor device can be operated in a first operation mode and in a second operation mode. In addition a method is provided for approach and/or touch detection with a sensor device.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: February 5, 2019
    Assignee: MICROCHIP TECHNOLOGY GERMANY GMBH
    Inventors: Claus Kaltner, Reinhard Unterreitmayer, Holger Steffens
  • Patent number: 10198120
    Abstract: Disclosed is a touch window including a substrate including a first region in which a touch is sensed and a second region provided at an edge of the first region, a sensing electrode to sense a touch position of the first region, and a wire connected with the sensing electrode. The wire includes comprises a first wire part provided in the first region and a second wire part provided in the second region.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: February 5, 2019
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Eun Jung Jeon, Seung Jin Kim, Jong Sun Kim, Kyoung Jong Yoo, Byung Youl Moon, Dong Mug Seong, Jun Sik Shin, Yu Hong Jeon, Chan Kyu Koo
  • Patent number: 10191591
    Abstract: In a method for performing a touch determination with a capacitive sensor, a self capacitance measurement of a capacitive sensor is initiated, wherein at the same time a mutual capacitance measurement including the capacitive sensor is performed. Such a method can be performed such that the self capacitance measurement and the mutual capacitance measurement differentially cancel with ungrounded conductive objects approaching or touching the capacitive sensor and additively combine for grounded objects approaching or touching the capacitive sensor.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: January 29, 2019
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Burke Davison, Xiang Gao, Yann LeFaou
  • Patent number: 10176358
    Abstract: A touch sensing device comprises touch electrodes having a first resolution for sensing touch in the active area. The touch sensing device also includes combination touch and fingerprint electrodes having a second resolution for sensing both touch and a fingerprint in the active area, the second higher than the first resolution. The touch sensing device also includes a touch and fingerprint controller that respectively applies a touch driving voltage for sensing touch to the plurality of touch electrodes and the plurality of combination touch and fingerprint electrodes during a touch driving mode of a touch period of the touch sensing device, and the touch and fingerprint controller applies a fingerprint driving voltage for sensing a fingerprint to the plurality of combination touch and fingerprint electrodes during a fingerprint mode of the touch period.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: January 8, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Manhyeop Han, Kyoseop Choo, Moonbong Song
  • Patent number: 10175119
    Abstract: The temperature-dependent resistance of a MEMS structure is compared with an effective resistance of a switched CMOS capacitive element to implement a high performance temperature sensor.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: January 8, 2019
    Assignee: SiTime Corporation
    Inventors: Michael H. Perrott, Shungneng Lee
  • Patent number: 10175278
    Abstract: An output capacitor of a switching converter filters the triangular current waveform output by an inductor. An auxiliary capacitor, having a capacitance that is much smaller than a capacitance of the output capacitor, is coupled in parallel with the output capacitor so as to conduct a portion of the inductor current. A slope detector circuit determines a slope of the auxiliary capacitor current, and outputs a slope signal corresponding to the slope. A process circuit receives the slope signal and a signal corresponding to the inductor current. Since the auxiliary capacitor current slope is known, along with the auxiliary capacitance value and inductor current, the process circuit can derive the value of the output capacitor by applying a scaling factor. The derived value can be used to dynamically tweak the compensation of the feedback loop or identify a failure of the output capacitor.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: January 8, 2019
    Assignee: LINEAR TECHNOLOGY HOLDING LLC
    Inventor: Vikas V. Paduvalli
  • Patent number: 10165349
    Abstract: An audio output device and an electronic device are provided. The audio output device includes a plurality of speakers, a terminal connected with a sound source providing device, and a cable connecting the plurality of speakers and the terminal. The cable includes a wire, a flexible element arranged surrounding a portion of the wire, and an insulation member forming an outer sheath of the cable. The flexible element includes a first flexible electrode and a second flexible electrode, and a capacitance of the flexible element changes as the flexible element is deformed.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: December 25, 2018
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Byung Lyul Park, Kang Ho Park
  • Patent number: 10161765
    Abstract: The invention relates to a capacitive sensor, the associated evaluation circuit and an actuator for a motor vehicle having the above-mentioned sensor for detecting the distance, speed, or position of an object, having a reference capacitance and two measuring capacitances, wherein a square-wave voltage is applied to the reference capacitance and the measuring capacitances via a resistor and a pulse which has a variable period and represents a measure of the particular measuring capacitance is obtained with the aid of a switching stage.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: December 25, 2018
    Assignee: IFM ELECTRONIC GMBH
    Inventor: Jörg Schulz
  • Patent number: 10146986
    Abstract: A capacitive image sensor and a method for operating the capacitive image sensor are provided. The capacitive image sensor has an array of capacitive sensing units for transforming a distance between each of the capacitive sensing units and a surface of an adjacent finger into an output electric potential. The capacitive sensing unit comprises: a protective layer; a first sensing plate, formed under the protective layer; a second sensing plate, formed under the first sensing plate; an active semiconductor circuitry, formed under the second sensing plate and connected to the first and second sensing plates; at least one first insulating layer, formed between the first sensing plate and the second sensing plate; and at least one second insulating layer, formed between the second sensing plate and the active semiconductor circuitry.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: December 4, 2018
    Assignee: SUNASIC TECHNOLOGIES, INC.
    Inventors: Chi Chou Lin, Zheng Ping He
  • Patent number: 10146385
    Abstract: A touch substrate, a display device and a detection method of a touch electrode pattern are disclosed. The touch substrate including a plurality of touch electrodes sequentially arranged along a first direction, in which each touch electrode is extended along a second direction; each touch electrode has a head end, a middle end and a tail end; the middle end is close to a first edge of the touch substrate, and the head end and the tail end are close to a second edge of the touch substrate and are respectively connected with contact pads; and the contact pads connected with the head end and the tail end of the same touch electrode are different. The touch substrate can avoid the waste of module materials.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: December 4, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BOE (HEBEI) MOBILE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Xuefeng Li, Dahua Zhu, Zhanbo Sun
  • Patent number: 10139890
    Abstract: Automatic low noise frequency selection for a touch sensitive device is disclosed. A low noise stimulation frequency can be automatically selected by device logic without intervention of the device processor to stimulate the device to sense a touch event at the device. The device logic can automatically select a set of low noise frequencies from among various frequencies based on the amount of noise introduced by the device at the various frequencies, where the frequencies with the lower noise amounts can be selected. The device logic can also automatically select a low noise frequency from among the selected set as the low noise stimulation frequency. The device logic can be implemented partially or entirely in hardware.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: November 27, 2018
    Assignee: Apple Inc.
    Inventors: Thomas James Wilson, Christoph H. Krah
  • Patent number: 10131249
    Abstract: A vehicle seat occupancy detection system includes at least one capacitive sensor member having at least one sensing electrode, an impedance measurement circuit for determining a complex impedance or a complex admittance of the at least one sensing electrode, an evaluation unit for generating an output signal based on a determined complex admittance of the at least one sensing electrode and comparison of the determined complex admittance to at least one predetermined value, and at least one electrically conductive ground connecting member that is intentionally electrically connected to the reference electrode and that is arranged in close proximity to the at least one sensing electrode. The at least one ground connecting member and the at least one sensing electrode are galvanically separated such that, when the seat gets wet, the sensing electrode is directly electrically connected to the reference electrode by the at least one ground connecting member.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: November 20, 2018
    Assignee: IEE International Electronics & Engineering S.A.
    Inventors: Guenter Goedert, Oleg Zeiler, Edmund Marx, Ingrid Scheckenbach
  • Patent number: 10126892
    Abstract: A method for moisture detection includes obtaining absolute capacitive sensor data, and processing circuitry, determining a contiguous region in a capacitive image generated based on the absolute capacitive sensor data, determining a concavity parameter of the contiguous region, and detecting a presence of moisture based at least in part on the concavity parameter. The method further includes operating based on a presence of moisture.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: November 13, 2018
    Assignee: Synaptics Incorporated
    Inventor: Prakriti Chintalapoodi
  • Patent number: 10128560
    Abstract: A hybrid antenna and integrated proximity sensor is described wherein a commonly shared conductive structure is used for both antenna functions as well as a proximity sensor functions.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: November 13, 2018
    Assignee: Ethertronics, Inc.
    Inventor: Chew Chwee Heng