Capacitance Sensor Patents (Class 73/862.337)
  • Patent number: 11500490
    Abstract: There is provided a touch panel, including: a substrate including a touch detection area and a fingerprint recognition area; plural touch detection units in the touch detection area, each touch detection unit including a touch detection electrode; plural fingerprint recognition units in the fingerprint recognition area, each fingerprint recognition unit including a fingerprint recognition electrode, and the fingerprint recognition electrode and the touch detection electrode being in a same layer; a signal wiring layer on a same side of the substrate as the touch detection electrode and the fingerprint recognition electrode and including plural first signal transmission lines and plural second signal transmission lines.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: November 15, 2022
    Assignees: CHONGQING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD, BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Jianfeng Liu, Ni Yang, Xuefang Chen, Qi Hu, Qi Zhao
  • Patent number: 11187600
    Abstract: A connector (130) is arranged between an inner support (110) and an outer support (120), and connects the inner support (110) and the outer support (120). A deformable body (140) has one end connected to the inner support (110) at a first position with respect to the direction of rotation about a Z-axis and the other end connected to the outer support (120) at a second position different from the first position, and is bent to be deformed in a radial direction by applying compressive force or tensile force between the first position and the second position. A detection body (150) includes a capacitative element including respective electrodes disposed to face the deformable body (140) and the outer support (120), and detects an elastic deformation generated in the deformable body (140) on the basis of the characteristic value of the capacitative element.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: November 30, 2021
    Assignee: DAI-ICHI SEIKO CO., LTD.
    Inventors: Kazuto Akiba, Takahito Kamiuto, Akihiro Kuromaru
  • Patent number: 10488968
    Abstract: According to an aspect, a display apparatus with a touch detection function includes: a display device including a display region in which a plurality of pixels are arranged; a pixel signal line that transmits a pixel signal to the pixel; outer display region wiring including wiring that is electrically coupled to the pixel signal line and extends along a predetermined direction outside the display region; and a touch detection electrode arranged at a position overlapping the outer display region wiring in a non-contact state, a longitudinal direction of the touch detection electrode being along a direction intersecting with the predetermined direction.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: November 26, 2019
    Assignee: Japan Display Inc.
    Inventors: Hiroshi Mizuhashi, Koji Noguchi
  • Patent number: 10222887
    Abstract: According to an aspect, a display apparatus with a touch detection function includes: a display device including a display region in which a plurality of pixels are arranged; a pixel signal line that transmits a pixel signal to the pixel; outer display region wiring including wiring that is electrically coupled to the pixel signal line and extends along a predetermined direction outside the display region; and a touch detection electrode arranged at a position overlapping the outer display region wiring in a non-contact state, a longitudinal direction of the touch detection electrode being along a direction intersecting with the predetermined direction.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: March 5, 2019
    Assignee: Japan Display Inc.
    Inventors: Hiroshi Mizuhashi, Koji Noguchi
  • Patent number: 9772174
    Abstract: A capacitor based sensor for angular position detection having two fixed plates arranged at an angle and a semicircular rotating plate in between. The sensor can determine any angular position in the full 0-360 degrees range. The sensor may be temperature compensated, and integrated with electronics such that sensor module only has two electrical leads, one for input power and one for input/output digital data. A method for converting capacitance measurements to an angle is also disclosed.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: September 26, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Mohamed Naushad Mohamed Zuhair, Jiro Takeda
  • Patent number: 9035662
    Abstract: A device and a method for the capacitive detection of an object which is preferably arranged behind a flat article that is transparent to electromagnetic radiation or a wall, including a sensor incorporating sensor electrodes for the detection of the object, preferably for the detection of relative movements between the sensor and the flat article or a finger, where a control circuit serves for the control of the sensor electrodes and for the evaluation of the output signals of the sensor, and, due to the fact that the sensor comprises at least one sensor electrode which is surrounded by at least one further electrode, the surrounding further electrode is connected to the sensor electrode by the control circuit in such a manner that, in the event of a change of the potential of the sensor electrode, the potential of the surrounding further electrode is regulated in the opposite sense to the sensor electrode in such a way that the sensor electrode remains at a pre-determined or pre-definable potential, such th
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: May 19, 2015
    Inventor: Gerd Reime
  • Patent number: 8939038
    Abstract: Disclosed is a torque index sensor, the sensor including a housing, a stator mounted at a space inside the housing, a magnet arranged inside the stator to rotate with a rotation shaft, a PCB (Printed Circuit Board) fixedly mounted inside the housing and mounted with a first magnetic element outputting a magnetization signal in response to rotation of the magnet, at least one or more fixing bosses protrusively formed at the housing, and a collector having a plurality of through holes penetratively formed at a position corresponding to that of the fixing boss and concentrating a magnetic field for guiding a magnetic flux of the magnet, wherein the fixing boss is thermally fused after passing the through hole to tightly fix the collector at an inner surface of the housing.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: January 27, 2015
    Assignee: LG Innotek Co., Ltd.
    Inventor: Myungchul Woo
  • Patent number: 8893563
    Abstract: A differential capacitance torque sensor utilizes multiple voltage sources in order to compensate for inherent electrical asymmetries in the sensor. A first voltage source having a voltage V1 is electrically connected across a longitudinally-extending, conductive proof mass, a first upper capacitor C1 and the second lower capacitor C4. A second voltage source having a voltage V2 is connected in series with the first voltage source, a second upper capacitor C3 and a first lower capacitor C2, such that the voltage V2 is given by V 2 = ? ? + 1 ? V 1 , where ? is a parameter defined as ? = C 2 + C 3 C 1 + C 4 - 1.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: November 25, 2014
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Samir Mekid, Igor Gilavdary
  • Patent number: 8667854
    Abstract: A small, high-stiffness torque sensor. An annular deformable body is disposed between left and right side supports. Convex sections protruding from the left side support in a rightward direction are joined to the left side surface of the annular deformable body, and convex sections protruding from the right side support in a leftward direction are joined to the right side surface of the annular deformable body. When force is applied to the right side support and torque around the Z axis acts on the left side support, the annular deformable body is elliptically deformed and the long-axis position of the inner peripheral surface of the annular deformable body moves away from the Z axis while the short-axis position moves closer to the Z axis. The acting torque is detected as a variation in the capacitance value of capacitive elements formed by displacement electrodes and fixed electrodes.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: March 11, 2014
    Assignee: Tri-Force Management Corporation
    Inventors: Nobuhisa Nishioki, Kazuhiro Okada
  • Patent number: 8493080
    Abstract: A test system for testing a capacitive touch sensor is provided. The test system includes a resistor, a signal generator and a micro controller. A first end of the resistor is electrically connected to a sensing port of the capacitive touch sensor. The signal generator provides a test voltage to a second end of the resistor according to control information. In this way, the resistor generates a test current according to the test voltage, and the capacitive touch sensor provides a voltage difference to the sensing port according to a plurality of switching signals, and converts the test current into test information. The micro controller generates the control information according to a test table, and compares the test information according to the test table, so as to determine whether an operation of the capacitive touch sensor is normal.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: July 23, 2013
    Assignee: Himax Technologies Limited
    Inventor: Yaw-Guang Chang
  • Publication number: 20130167661
    Abstract: A small, high-stiffness torque sensor. An annular deformable body is disposed between left and right side supports. Convex sections protruding from the left side support in a rightward direction are joined to the left side surface of the annular deformable body, and convex sections protruding from the right side support in a leftward direction are joined to the right side surface of the annular deformable body. When force is applied to the right side support and torque around the Z axis acts on the left side support, the annular deformable body is elliptically deformed and the long-axis position of the inner peripheral surface of the annular deformable body moves away from the Z axis while the short-axis position moves closer to the Z axis. The acting torque is detected as a variation in the capacitance value of capacitive elements formed by displacement electrodes and fixed electrodes.
    Type: Application
    Filed: July 27, 2011
    Publication date: July 4, 2013
    Inventors: Nobuhisa Nishioki, Kazuhiro Okada
  • Patent number: 8421482
    Abstract: An anti-pinching device (18) for a pivotable actuating element (6) of a motor vehicle (2) is specified. Said device comprises a capacitive sensor (8) which is intended to contactlessly detect an obstacle in the path of the actuating element (6) and has an electrode (14) for generating an external electric field opposite a counterelectrode (16), wherein the electrode (14) extends in a radial direction (R) of the pivoting movement of the actuating element (6), and a control unit (10) which is set up to interpret a change in a measurement capacitance (CM), which is formed between the electrode (14) and the counterelectrode (16), as pinching when the changed measurement capacitance (CM) exceeds a triggering threshold (A) which is predefined on the basis of an opening angle (?) of the pivotable actuating element (6) and to track the triggering threshold (A).
    Type: Grant
    Filed: July 28, 2007
    Date of Patent: April 16, 2013
    Assignee: Brose fahrzeugteile GmbH & Co. Kommanditgesellschaft
    Inventors: Holger Wuerstlein, Thomas Weingaertner, Wolf-Christian Mueller
  • Patent number: 8395396
    Abstract: A sanitary dispenser, particularly a paper or towel dispenser, contains a housing, in which a sanitary product to be dispensed and a discharge unit for the sanitary product to be dispensed can be arranged. An electric motor is provided for the discharge unit, the electric motor being activatable in a non-contact manner by a capacitive sensor from outside of the housing. The sensor capacitance of the capacitive sensor is formed by a planar electrode disposed inside the housing and by a surface of a body part and/or an object arranged outside of the housing.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: March 12, 2013
    Inventor: Hans Georg Hagleitner
  • Patent number: 7921728
    Abstract: A flexible apparatus and method to enhance capacitive force sensing is disclosed. In one embodiment, a force measuring device includes a sensor capacitor having a fixed surface and a moveable surface substantially parallel to the fixed surface, at least one spring assembly (e.g., may deflect longitudinally and/or perpendicularly to a direction of the force) positioned between the fixed surface and the movable surface (e.g., the spring assembly may alter in height in response to a force applied perpendicular to the movable surface and to cause a change in the gap between the fixed surface and the movable surface), and a circuit to generate a measurement of the force based on an algorithm that considers a change in a capacitance of the sensor capacitor. A reference capacitor may adjust the measurement of the applied force based on one or more environmental conditions.
    Type: Grant
    Filed: February 18, 2008
    Date of Patent: April 12, 2011
    Assignee: YPoint Capital, Inc
    Inventors: William D. Dallenbach, Divyasimha Harish
  • Publication number: 20110023627
    Abstract: The present invention relates to a method for providing a one- or multipart torsion element of a torque sensor with at least one magnetic encoding by applying at least one current pulse to the torsion element. It is provided that the variation of the current pulse over time is formed. Moreover, the present invention relates to a device for providing a one- or multipart torsion element of a torque sensor with at least one magnetic encoding.
    Type: Application
    Filed: October 23, 2008
    Publication date: February 3, 2011
    Inventors: Ingo Herrmann, Frank Schatz
  • Patent number: 7688204
    Abstract: A double-electrode capacitive sensor for detecting a detection object includes: an electrode assembly having first and second electrodes and an insulation substrate; and a detection circuit. The first and second electrodes are disposed on first and second surfaces of the substrate, respectively. The detection circuit applies an alternating voltage between a ground and the first electrode, and detects an electric potential of the second electrode, or controls the electric potential of the second electrode to follow the alternating voltage. The detection circuit detects a capacitance change between the first electrode and the ground when the detection object approaches the first electrode for determining whether the detection object approaches the first electrode. A periphery of the second electrode is substantially opposite to a periphery of the first electrode.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: March 30, 2010
    Assignee: Denso Corporation
    Inventors: Shoichi Yamanaka, Tsutomu Kamizono
  • Patent number: 7237444
    Abstract: A torque detection system is provided for detecting torque applied to a rotary shaft. A spring element is connected to an input and output shaft. As torque is applied to the shaft system, the input shaft is rotationally offset from the output shaft and a sensing system is provided for sensing the amount of rotational offset which is then correlated to a rotational torque level.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: July 3, 2007
    Assignee: Freudenberg-Nok General Partnership
    Inventors: Alexander Berdichevsky, Vahidin Alajbegovic
  • Patent number: 6955097
    Abstract: A radial movement capacitive torque sensor includes a pair of concentric capacitor plate rings lying in a common plane, a capacitor plate ring facing the pair of concentric capacitor plate rings, and a paddle assembly disposed between the pair of concentric capacitor plate rings and the capacitor plate ring. The paddle assembly includes a first rotor having a circular opening and having at least one pair of spaced apart bearings mounted thereon, a second rotor having a circular opening and having at least one pivot point located thereon, and at least one paddle having a dielectric head, a curved neck and a body. The curved neck is disposed between a corresponding one of said at least one pair of spaced bearings, and the body is pivotally coupled to a corresponding one of said at least one pivot point.
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: October 18, 2005
    Assignee: BEI Sensors & Systems Company, Inc.
    Inventors: Asad M. Madni, Jim B. Vuong, Robert K. Hansen
  • Patent number: 6892590
    Abstract: A capacitive encoder includes a signal-balanced shield electrode configuration that does not require electrical ground connection or active sensing and control in order to maintain the shield electrode(s) at a sufficiently constant voltage during capacitive position measurements. The shield electrode configuration is positioned in a capacitive coupling gap between transmitter electrodes and receiver electrodes during operation. The shield electrode configuration is patterned in a manner that complements the layout of the transmitter electrodes, such that the shield electrode configuration inherently floats at a nominally constant electrical potential when coupled to the signals present on the transmitter electrodes.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: May 17, 2005
    Assignee: AnderMotion Technologies LLC
    Inventor: Nils Ingvar Andermo
  • Patent number: 6772646
    Abstract: A differential capacitive torque sensor for a continuously rotating shaft such as the steering column of an automobile provides an apertured metal cage shielding a dielectric rotor. They are respectively mounted on opposite sides of a split shaft connected by a torsion bar. The relative rotation of the apertured conductive plates and the rotor change the overall differential capacitance of the system to proportionally indicate clockwise or counter-clockwise torque.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: August 10, 2004
    Assignee: BEI Sensors & Systems Company, Inc.
    Inventors: Asad M. Madni, Robert K. Hansen, Jim B. Vuong
  • Patent number: 6601462
    Abstract: A dielectric layer 32 variable in dielectric constant in dependence upon the strain is formed on at least a part of an outer peripheral surface of a bar 31 having a circular cross section. Interdigital electrodes are faced to the dielectric layer to thereby form a single capacitor. The interdigital electrodes have a plurality of linear electrodes 34a and 34b inclined at a predetermined inclination angle with respect to a center axis of the bar. Preferably, the dielectric layer is provided with a cylindrical insulator 33 faced thereto with a small gap kept therebetween, and the linear electrodes are formed on the peripheral surface of the cylindrical insulator. The linear electrodes may be formed directly on the surface of the dielectric layer.
    Type: Grant
    Filed: May 9, 2001
    Date of Patent: August 5, 2003
    Assignee: NEC Tokin Corporation
    Inventors: Toru Ueno, Naoki Wako, Tetsuo Yoshida
  • Patent number: 6581481
    Abstract: The present invention provides for measurements of the principal strain magnitudes and directions, and maximum shear strain that occurs in a porous specimen, such as plastic, ceramic or porous metal, when it is loaded (or subjected to a load). In one embodiment the invention includes a capacitive delta extensometer arranged with six sensors in a three piece configuration, with each sensor of each pair spaced apart from each other by a predetermined angle, such as 120 degrees.
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: June 24, 2003
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Gail P. Perusek
  • Patent number: 6564654
    Abstract: A vertical movement capacitive torque sensor for a rotating shaft such as the steering column of an automobile includes dielectric vanes interposed between capacitor plates which are moveable proportional to the angular displacement of two shaft portions which are linked by a torsion bar or concentric inner and outer shaft portions, the vanes move in a radial direction perpendicular to the shaft axis. Concentric capacitor rings are provided so that a bridge circuit can easily indicate differential capacitance which is proportional to clockwise or counter-clockwise torque.
    Type: Grant
    Filed: October 2, 2001
    Date of Patent: May 20, 2003
    Assignee: BEI Sensors & Systems Company, Inc.
    Inventors: Asad M. Madni, Jim B. Vuong, Mitchell London
  • Publication number: 20030010138
    Abstract: A vertical movement capacitive torque sensor for a rotating shaft such as the steering column of an automobile includes dielectric vanes interposed between capacitor plates which are moveable proportional to the angular displacement of two shaft portions which are linked by a torsion bar or concentric inner and outer shaft portions, the vanes move in a radial direction perpendicular to the shaft axis. Concentric capacitor rings are provided so that a bridge circuit can easily indicate differential capacitance which is proportional to clockwise or counter-clockwise torque.
    Type: Application
    Filed: October 2, 2001
    Publication date: January 16, 2003
    Inventors: Asad M. Madni, Jim B. Vuong, Mitchell London
  • Patent number: 6401551
    Abstract: A fingerprint reading device is provided, which is capable of enhancing a versatility when actually used, increasing a productivity and reducing costs. The fingerprint reading device comprises an electrostatic capacity type fingerprint reading sensor provided on a liquid crystal panel, and drive circuits thereof. The fingerprint reading sensor includes detection electrodes arranged in predetermined positions, active elements connected respectively to the detection electrodes, and a protective film provided on the surface thereof.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: June 11, 2002
    Assignee: Seiko Instruments Inc.
    Inventors: Yukito Kawahara, Hiroyuki Fujita, Tsutomu Matsuhira
  • Patent number: 6370968
    Abstract: A torque sensor having a simple structure and free from a torque detection error. The torque sensor comprises an elastic member for connecting a first shaft to a second shaft and generating torsion displacement between the first shaft and the second shaft according to torque between the first shaft and the second shaft, a ring-shaped movable electrode attached to the shafts so that it displaces in an axial direction according to a relative torsion angle between the first shaft and the second shaft, first and second fixed electrodes installed at locations where they do not turn together with the shafts, and detecting means for detecting capacitance between each of the first and second fixed electrodes and the movable electrode.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: April 16, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Katsuaki Yasui