With Comparison Or Difference Circuit Patents (Class 324/679)
  • Patent number: 11054957
    Abstract: Disclosed is a touch display device capable of reducing deterioration in touch performance. The touch display device includes a plurality of first touch electrodes disposed in an active area of a substrate and a plurality of second touch electrodes disposed in the active area of the substrate, the plurality of second touch electrodes having different shapes from the plurality of first touch electrodes, wherein at least one of the plurality of second touch electrodes is formed by connecting at least two sub-electrodes having smaller areas than each of the first touch electrodes to each other. Consequently, the areas of the first and second touch electrodes are similar to each other, whereby it is possible to reduce touch performance deteriorated due to deviation in area between the touch electrodes.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: July 6, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Yoonnara Jang, Jae-Gyun Lee, Jung-Ho Jo, Jeong-Hoon Lee
  • Patent number: 11052011
    Abstract: A standing-up assistance apparatus includes a first sensor that measures a muscle potential of a lower leg of a user, a second sensor that measures a knee angle of the user, a processor that determines whether starting to assist the user in a standing-up motion from a seated state is possible, based on, at least, the measured muscle potential and the measured knee angle, and outputs an instruction signal if the processor determines that starting to assist the user in the standing-up motion is possible, and an assistance mechanism. The assistance mechanism starts assisting the user in the standing-up motion when the assistance mechanism receives the instruction signal from the processor.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: July 6, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yusuke Kato, Tsuyoshi Inoue, Hiroyuki Motoyama, Jun Ozawa
  • Patent number: 11037497
    Abstract: The display device includes a display panel, a connecting circuit board physically connected to the display panel; a driving circuit board physically connected to the connecting circuit board; a driving element disposed on the connecting circuit board and comprising a first surface, and a second surface facing the connecting circuit board and which is opposite to the first surface; a first shielding layer disposed on a first surface of the driving element which is exposed outside the display device; and a second shielding layer overlapping an entirety of the first shielding layer and disposed on the connecting circuit board.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: June 15, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Minki Kim, Hyungwoo Kwon, Gyunsoo Kim, Kijong Kim, Seunghwan Baek, Insu Baek, Kwangwook Choi
  • Patent number: 10874576
    Abstract: A gait state determination apparatus includes: a foot attachment structure disposed in the walking assistance apparatus, the foot attachment structure to be attached to a foot of a user; a pressure detection device, disposed in the foot attachment structure, detecting a pressure exerted on a sole of the user; a pressure center calculation device successively calculating a center position of a pressure exerted on the sole during a gait motion of the user based on the pressure exerted on the sole detected by the pressure detection device; and motion determination device determining that it is a timing of a start of forward swinging of the leg to which the walking assistance apparatus is attached when the center position of the pressure calculated by the pressure center calculation devices is shifted from a position in a heel region of the sole to a toe region thereof, is disclosed.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: December 29, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hikaru Sugata
  • Patent number: 10838527
    Abstract: A touch sensor includes: an active area including a first sub-active area and a second sub-active area; a plurality of first touch electrodes in the first sub-active area and the second sub-active area; and a plurality of second touch electrodes in the first sub-active area and the second sub-active area, and a length of a first border portion that is a separated area between adjacent first and second touch electrodes in the first sub-active area is different from a length of a second border portion that is a separated area between adjacent first and second touch electrodes in the second sub-active area.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: November 17, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin Bo Shim, Jung-Moo Hong, In Seo Kee, Kyung Seop Kim, Hyun Jae Na, Sang Youn Han
  • Patent number: 10833676
    Abstract: A switching element for the contactless activation of an electric-motor adjustment drive of a motor vehicle, in particular an electric-motor-operated liftgate, having a profile strip, which extends in a longitudinal direction. The profile strip has a channel, which extends in the longitudinal direction and which transitions into a slit, which extends in the longitudinal direction. An electrode is arranged within the channel. The invention further relates to an electric-motor-operated liftgate having a switching element and to a method for creating a switching element.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: November 10, 2020
    Assignee: Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Bamberg
    Inventor: Stefan Hieltscher
  • Patent number: 10818733
    Abstract: An OLED touch display substrate, an OLED touch display panel, a display device and a control method thereof are provided. The OLED touch display substrate includes an anode, a cathode and a functional layer arranged on a base substrate. The cathode includes sub-cathodes, a time period for displaying one image frame of the OLED touch display substrate includes a display time period and a touch time period, and the sub-cathodes further serve as touch electrodes. The touch display substrate further includes touch signal lines electrically connected to the touch electrodes. Within the display time period, a common voltage signal is applied to each touch electrode via the respective touch signal line. Within the touch time period, a touch scanning signal is applied to each touch electrode via the respective touch signal line, and it is detected whether or not a self-capacitance of the touch electrode changes.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: October 27, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Shengji Yang, Xue Dong, Jing Lv, Xiaochuan Chen, Can Zhang
  • Patent number: 10775946
    Abstract: A handheld controller having at least one input device, a left capacitive sensor electrode mounted in a left portion of the handheld device; a right capacitive sensor electrode mounted in a right portion of the handheld device; and a microcontroller. The input device is configured to receive user inputs provided via a finger of the hand holding the handheld controller. The handheld controller is symmetric from left to right. The microcontroller is configured to determine whether the hand is a left hand or a right hand based on measurements made via the left capacitive sensor electrode and the right capacitive sensor electrode and dynamically configures the handheld controller has left-handed or right-handed based on the measurements.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: September 15, 2020
    Assignee: Finch Technologies Ltd.
    Inventors: Viktor Vladimirovich Erivantcev, Alexey Ivanovich Kartashov, Daniil Olegovich Goncharov, Iakov Evgenevich Sergeev, Ravil Salavatovich Shafikov, Kirill Alexandrovich Kastriukin, Rustam Rafikovich Kulchurin
  • Patent number: 10732746
    Abstract: A touch sensor includes a first electrode, a second electrode, and a sensing channel. The first electrode includes first electrode cells arranged in a first direction, a first connection portion connecting the first electrode cells in the first direction and a first opening disposed in at least one of the first electrode cells. The second electrode includes an electrode portion disposed in the first opening. The electrode portion is disposed on a same layer as the first electrode cells and separated from the first electrode. The sensing channel includes a first terminal and a second terminal. The first terminal is connected to the first electrode. The second terminal is connected to the second electrode.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: August 4, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Do Ik Kim, Ga Young Kim, Sang Hyun Lim, Young Sik Kim, Sang Chul Lee, Hwan Hee Jeong
  • Patent number: 10656733
    Abstract: An electronic pen includes a coil wound around a magnetic core, a first capacitor forming a resonance circuit with the coil, a rectifier circuit which, in operation, rectifies an alternating-current signal received by the resonance circuit, the rectifier circuit including a second capacitor, a voltage detecting circuit which, in operation, detects whether a rectified output voltage across the second capacitor of the rectifier circuit exceeds a predetermined value, a third capacitor having a capacitance that is larger than a capacitance of the second capacitor, and a charge control circuit which, in operation, controls supply of a charging current to the third capacitor by the rectified output voltage. The charge control circuit in operation, causes the charging current to be fed to the third capacitor by the rectified output voltage when the voltage detection circuit detects that the rectified output voltage obtained across the second capacitor exceeds the predetermined value.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: May 19, 2020
    Assignee: Wacom Co., Ltd.
    Inventor: Susumu Yamada
  • Patent number: 10627205
    Abstract: A vehicle manipulation detecting device includes a plurality of sensor electrodes and a shield electrode. Each of the sensor electrodes is configured to be attached to a window glass of a vehicle and output a detection signal corresponding to a capacitance changed in response to contact or approach of an object. The sensor electrodes include at least one first sensor electrode and at least one second sensor electrode. The shield electrode is arranged at a position corresponding to the first sensor electrode on an inner side of the first sensor electrode with reference to a passenger compartment of the vehicle.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: April 21, 2020
    Assignees: AISIN SEIKI KABUSHIKI KAISHA, HONDA MOTOR CO., LTD.
    Inventors: Ayaka Miyagi, Hiroshi Shingu, Kenichiro Kagawa, Toshihiro Kaneda
  • Patent number: 10528193
    Abstract: Provided are a conductive film in which the area of an intersection portion between a first electrode pattern and a second electrode pattern is defined and is suitable for a touch panel in terms of, for example, the accuracy of detection (S/N ratio), a touch panel including the conductive film, and a display device including the touch panel. The conductive film includes a transparent base, two or more first electrode patterns, and two or more second electrode patterns. The first electrode pattern and the second electrode pattern face each other, with the transparent base interposed therebetween, and intersect each other. Each of the first electrode pattern and the second electrode pattern is a combination of a plurality of cells formed by thin metal wires. The area of an intersection portion between the first electrode pattern and the second electrode pattern is greater than 1 mm2 and less than 20 mm2.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: January 7, 2020
    Assignee: FUJIFILM Corporation
    Inventor: Hiroshige Nakamura
  • Patent number: 10491199
    Abstract: The disclosure relates to a method for operating a pulse generator for generating measuring pulses for a capacitive sensor having an adjustable pulse time in the range from 10 ns to 200 ns, having a controllable delay circuit which contains a first integrating RC combination (RT1/CT1) and a second integrating RC combination (RT2/CT2), having a logical combining element having two inputs and one output, an initialization circuit and a control unit, wherein the first input of the logical combining element receives a clock signal, and the second input of the logical combining element receives an analog setting signal (SSE) from the output of the delay circuit, wherein two simultaneous clock signals are generated, of which the first clock signal (T) is led without delay to the first input of the logical combining element, and the second clock signal (T2), delayed by the delay circuit, is led to the second input of the logical combining element, time-variable output pulses are generated with the aid of time-variab
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: November 26, 2019
    Assignee: IFM ELECTRONIC GMBH
    Inventor: Jörg Schulz
  • Patent number: 10481728
    Abstract: A display device includes: a first substrate including a display area including a pixel area and a non-display area adjacent to the display area, the first substrate including a connection pad disposed in the non-display area; and a second substrate opposite to the first substrate, the second substrate including a base substrate including a sensing area corresponding to the display area and a non-sensing area corresponding to the non-display area, and a touch sensor disposed on the base substrate, wherein the touch sensor includes a touch sensing electrode disposed in the sensing area, a touch pad disposed in the non-sensing area, and a sensing line electrically connecting the touch sensing electrode and the touch pad, wherein the non-sensing area of the second substrate is bent such that the connection pad and the touch pad are opposite to each other.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: November 19, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min Soo Kim, Mu Gyeom Kim
  • Patent number: 10436825
    Abstract: A system and method for the synchronization of a central controller wirelessly connected to at least one self-powered power sensor (SPPS). The method includes: sampling an electrical signal by at least one SPPS; estimating by the at least one SPPS a time of a sample of the electrical signal; generating a packet comprising packet components including a preamble, a synchronization field, and message data; generating synchronization information for the synchronization field of the packet; transmitting wirelessly the packet components; determining a time offset value for the packet, the time offset calculated from the time of the sample of the electrical signal and a transmission time-stamp of the synchronization information; and transmitting the time offset value by appending it to the packet, wherein the time offset value is used for the purpose of calculating at least an electrical parameter.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: October 8, 2019
    Assignee: Panoramic Power Ltd.
    Inventors: Adi Shamir, Daniel Aljadeff
  • Patent number: 10430006
    Abstract: An input device includes a voltage divider circuit that includes a resistive sensor whose resistance changes in accordance with a change in pressure of a pressing operation and at least one resistor device and that, upon receiving driving voltage, generates a divider voltage according to the resistance of the resistive sensor device, a first driving circuit that alternately supplies, to the voltage divider circuit at certain time intervals, a first driving voltage and a second driving voltage for generating different divider voltages, a capacitor whose charge changes in accordance with a change in the divider voltage, and a first charge detection circuit that detects an amount of change in the charge of the capacitor at a time when the driving voltage changes from the first driving voltage to the second driving voltage and when the driving voltage changes from the second driving voltage to the first driving voltage.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: October 1, 2019
    Assignee: ALPS ALPINE CO., LTD.
    Inventor: Hiroshi Shigetaka
  • Patent number: 10402030
    Abstract: Disclosed are a display panel and a touch display device. The display panel comprises a pressure sensor, the pressure sensor comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first set of connection blocks and a second set of connection blocks; the material of the first resistor, the second resistor, the third resistor and the fourth resistor is a semiconductor material; the material of the first set of connection blocks and the second set of connection blocks is a metal material; the display panel further comprises a first direction and a second direction; the first resistor and the third resistor comprise at least two subresistors; each subresistor forming the same resistor is connected end to end with each other via the second set of connection blocks; the shape of each subresistor, the second resistor and the fourth resistor is a bar.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: September 3, 2019
    Assignee: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Qijun Yao, Shaolong Ma, Feng Lu, Liang Liu
  • Patent number: 10212500
    Abstract: An analog to digital conversion circuit receives a transducer output signal and outputs a data bitstream, where a latch or flip flop has an input that receives a clock signal. An AC-DC power converter receives the clock signal and produces a DC voltage which may power the analog to digital conversion circuit. The AC-DC power converter has a rectifier, an energy store and a voltage regulator, charge pump or filter, which draws power from the energy store to produce the DC voltage. A control circuit delays replenishment of the energy store by the rectified clock signal, responsive to the clock signal. Other embodiments are also described and claimed.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: February 19, 2019
    Assignee: Apple Inc.
    Inventors: Roderick B. Hogan, Girault W. Jones, Nathan A. Johanningsmeier
  • Patent number: 10209844
    Abstract: A readout device for a capacitive sense matrix includes a computer readable storage medium configured to store capacitance data. The capacitance data represents capacitance values of the capacitive sense matrix. The readout device also includes a readout circuit configured to receive a signal from the capacitive sense matrix, the readout circuit being configured based upon the capacitance data. Also described are a readout method and a method of compensating for variations in capacitance.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: February 19, 2019
    Assignee: STMicroelectronics Asia Pacific Pte Ltd
    Inventors: Yannick Guedon, Sze-Kwang Tan, Dianbo Guo
  • Patent number: 10184967
    Abstract: The relationship between capacitance value variation and an AC voltage value of a capacitor is obtained in advance as an approximation equation or table data. The AC voltage value applied to the capacitor in the circuit is calculated. The capacitance value of the capacitor is calculated from the AC voltage value calculated in step 3 on the basis of the obtained relationship. The calculated capacitance value of the capacitor and the capacitance value of the capacitor set to the set value are compared. If the result of the comparison is that there is a difference between the two values, the calculated value is set as a new set value and the same processing is repeated. If there is no longer a difference between the two values, the capacitance value calculated at that time is determined to be the capacitance value in the circuit.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: January 22, 2019
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Kota Saito
  • Patent number: 10048662
    Abstract: A system and method for incorporating occupancy-detecting technology into furniture is provided. More particularly, the invention relates to detecting occupancy using a detection pad coupled a portion of a bed. The detection pad may include an aluminized polymer material, a metalized and/or conductive fabric, an aluminum sheet, a metal screen, an aluminum tape, a wire grid, or other metalized material or fabric. A controller determines the corresponding response based on single-occupancy or dual-occupancy detection by one or more detection pads. A processor receives information regarding changes in capacitance and determines when a change in voltage satisfies a threshold. Based on a determination of occupancy, or lack thereof, a variety of corresponding features of the adjustable bed may be activated.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: August 14, 2018
    Assignee: L&P Property Management Company
    Inventors: Ryan Edward Chacon, Avinash Madadi, William Robert Rohr
  • Patent number: 10042468
    Abstract: Disclosed is a touch panel including a conductive film having first and second electrodes on one surface thereof. The first electrode includes first sensor parts spaced apart from one another in a first direction and extending a long length in a second direction, and first wiring parts electrically connected to the first sensor parts. The second electrode includes second sensor parts spaced apart from one another in the first direction and having a shape complementary to the first sensor parts, and a second wiring part electrically connected to the second sensor parts. Each second sensor part includes first and second sensor portions located at first and second positions in the second direction. The second wiring part includes first and second connection portions for connecting the first or second sensor portions of the second sensor parts to one another, the second connection portion being located adjacent to the first wiring part.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: August 7, 2018
    Assignee: LG ELECTRONICS INC.
    Inventor: Minchul Kim
  • Patent number: 10013123
    Abstract: Disclosed are a touch screen device and a method of driving the same, which minimize an influence of parasitic capacitance of a touch electrode and sense a voltage charged into capacitance(s) of the touch electrode. The touch screen device includes a touch electrode, a touch driving line connected to the touch electrode, a touch driving voltage output unit connected to the touch driving line through a first switch to output a touch driving voltage, a current source connected to the touch driving line through a second switch to discharge electrical charges charged into parasitic capacitance of the touch electrode according to a predetermined discharge current, and a touch voltage sensing unit connected to the touch driving line through a third switch to sense a voltage charged into each of finger capacitance and the parasitic capacitance of the touch electrode.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: July 3, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: SungChul Kim, CheolSe Kim
  • Patent number: 9864894
    Abstract: A fingerprint sensing circuit, system, and method is disclosed. The fingerprint sensor maybe include a plurality of inputs coupled to a plurality of fingerprint sensing electrodes and to an analog front end. The analog front end may be configured to generate at least one digital value in response to a capacitance of at least one of the plurality of fingerprint sensing electrodes. Additionally, the analog front end may include a quadrature demodulation circuit to generate at least one demodulated value for processing by a channel engine. The channel engine may generate a capacitance result value that is based, in part, on the demodulated value and is stored in a memory.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: January 9, 2018
    Assignee: Cypress Semiconductor Corporation
    Inventors: Viktor Kremin, Paul M. Walsh, Kaveh Hosseini, Jaskarn Singh Johal, Erhan Hancioglu, Onur Ozbek
  • Patent number: 9817530
    Abstract: An electronic device may include a touchscreen having sensing capacitors, and readout circuitry. The readout circuitry may be configured to accumulate a sample set from each sensing capacitor, divide the sample set into sample subsets, remove a given sample subset when the given sample subset exceeds a threshold, and process remaining sample subsets for touch input.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: November 14, 2017
    Assignee: STMICROELECTRONICS ASIA PACIFIC PTE. LTD.
    Inventors: Kusuma Adi Ningrat, Lokesh Kumar Korapati, Jerry Kim
  • Patent number: 9766757
    Abstract: A sensor element device for a capacitive touch switch of an operating device faces with an upper side toward the underside of a control panel of the operating device and has an illuminated display with a lighting means. Provided around the lighting means is a housing with fastening means for fastening the sensor element device to a component carrier. Provided on the outside of the housing or of the structural unit, in the region toward the upper side there is electrically conductive plastic that extends along an outer periphery of the housing. From the electrically conductive plastic there extends in the direction of the underside, toward the component carrier, a contacting means for the electrical connection thereto.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: September 19, 2017
    Assignee: E.G.O. Elektro-Geraetebau GmbH
    Inventor: Hartmut Keller
  • Patent number: 9740330
    Abstract: In one aspect, a touch sensor includes a dielectric surface layer; drive electrodes disposed on the dielectric surface layer and arranged radially about a center, the drive electrodes defining a perimeter about the center, and a sense electrode disposed on the dielectric surface layer and arranged between two of the drive electrodes. Each drive electrode can include: an outer radial section extending radially along the perimeter; a central section extending from the outer radial section towards the center; and an inner radial section comprising a first section extending radially away from the central section in a first radial direction and a second section, shorter than the first section, extending radially away from the central section in a second radial direction.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: August 22, 2017
    Assignee: Atmel Corporation
    Inventor: Lowry D. Lewis
  • Patent number: 9736934
    Abstract: A touch panel has an active area and a non-active area disposed at an outer side of the active area defined therein. The touch panel includes a support member and a conductive layer formed on the support member and including an electrode part in the active area to sense touch and a wiring part disposed in the non-active area to be connected to the electrode part. In the non-active area, the wiring part is disposed on the support member and the electrode part is partially disposed on the wiring part.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: August 15, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Minchul Kim, Munsu Lee
  • Patent number: 9645685
    Abstract: A flexible touch panel is disclosed. The flexible touch panel includes a plurality of driving electrode patterns and detection electrode patterns. A distance between the driving electrode patterns and detection electrode patterns is configured such that a difference of mutual capacitance between the driving electrode pattern and detection electrode pattern in different areas of the flexible touch panel has been changed in an opposite direction when the flexible touch panel has been curved. The difference of the mutual capacitance is the difference of the mutual capacitance before a touch event and after the touch event. In this way, the difference of the mutual capacitance caused by curved flexible touch panel may be decreased.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: May 9, 2017
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Chun-kai Chang
  • Patent number: 9626052
    Abstract: A touch panel including a touch area and a peripheral area adjacent to the touch area is provided. The touch panel includes a plurality of first electrodes, a plurality of second electrodes, a plurality of third electrodes, a plurality of pads and a plurality of wirings. The first electrodes, the second electrodes and the third electrodes are located in the touch area and electrically insulated to each other, wherein the third electrodes expose at least a part of the first electrodes and at least a part of the second electrodes. The pads are located in the peripheral area. The first electrodes, the second electrodes and the third electrodes are electrically connected to the pads through the wirings respectively.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: April 18, 2017
    Assignee: WINTEK CORPORATION
    Inventors: Chun-Cheng Lu, Chia-Ching Lu, Chin-Chang Liu, Ting-Yu Chang, Wen-Chun Wang
  • Patent number: 9606688
    Abstract: A touch sensing apparatus may include a driving signal generating circuit including a first switch and a second switch and providing driving signals to a first node of a node capacitor, the driving signals being generated by switching operations of the first switch and the second switch, and a C-V converting circuit including a buffer circuit having a first feedback capacitor and a third switch disposed between a second node of the node capacitor and the first feedback capacitor and transferring a charging voltage of the node capacitor to the first feedback capacitor through a switching operation of the third switch to generate an output voltage. The buffer circuit further includes a fourth switch disposed between the second node of the node capacitor and a current source, and the fourth switch is turned on in an off operation section of the third switch.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: March 28, 2017
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Moon Suk Jeong, Yong Il Kwon, Tah Joon Park, Byeong Hak Jo
  • Patent number: 9541590
    Abstract: The present invention relates to a circuit arrangement for detecting a capacitance of a capacitive component and/or a change in the capacitance of a capacitive component, which circuit arrangement comprises, inter alia a monostable flipflop controllable by a control signal and having at least two inputs and one output, wherein a first input of the flipflop is provided for the control signal, and a second input is connected to a capacitive component. The circuit arrangement further comprises a conversion device, which is connected to the output of the monostable flipflop, and an evaluation unit, which is connected to the conversion device in order to evaluate the signal voltage and from this to generate at least one detection value, which indicates the capacitance and/or a change in the capacitance of the capacitive component.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: January 10, 2017
    Assignee: Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Hallstadt
    Inventors: Udo Geuther, Ralf Daiminger, Detlef Russ
  • Patent number: 9529020
    Abstract: A circuit and a method for sensing differential capacitance involve using plural storing capacitors to repeatedly sample charges of the differential capacitance in an over-sampling manner, and storing the charges sampled in different transfer rounds into different storing capacitors instead of repeatedly transferring charges for a single storing capacitor, so as to collect charge averages about both inputs and noises and in turn effectively reduce RF interference and source noises.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: December 27, 2016
    Assignee: ELAN MICROELECTRONICS CORPORATION
    Inventors: Chao-Chi Yang, Shih-How Peng
  • Patent number: 9524054
    Abstract: A touch sense circuit comprises a first sampling circuit to sample a touch sense signal during a first period of a touch drive signal in which the touch drive signal is at a first level, to generate a first sampled signal; a second sampling circuit to sample the touch sense signal during a second period of the touch drive signal in which the touch drive signal is at a second level, to generate a second sampled signal, the second sampled signal in a same polarity as the first sampled signal; and an integrator including an input terminal and an output terminal, both the first sampled signal and the second sampled signal being input to the input terminal of the integrator and integrated to generate an output signal at the output terminal of the integrator, the output signal being used to detect a touch input.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: December 20, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Beomjin Kim, Dukhyo Lee
  • Patent number: 9478189
    Abstract: In one aspect, a touch sensor includes a dielectric surface layer; drive electrodes disposed on the dielectric surface layer and arranged radially about a center, the drive electrodes defining a perimeter about the center, and a sense electrode disposed on the dielectric surface layer and arranged between two of the drive electrodes. Each drive electrode can include: an outer radial section extending radially along the perimeter; a central section extending from the outer radial section towards the center; and an inner radial section comprising a first section extending radially away from the central section in a first radial direction and a second section, shorter than the first section, extending radially away from the central section in a second radial direction.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: October 25, 2016
    Assignee: Atmel Corporation
    Inventor: Lowry D. Lewis
  • Patent number: 9448431
    Abstract: An image display apparatus includes a display panel that displays an image and a window layer disposed on the display panel and including a display area transmitting the image and a non-display area surrounding the display area. The window layer includes a window cover disposed to face the display panel, a decorated printed layer disposed on a lower surface of the window cover in the non-display area, and a polarization layer disposed on the lower surface of the window cover in the display area and disposed in the non-display area to cover the decorated printed layer. An inner side surface of the decorated printed layer makes contact with a side surface of the polarization layer at a boundary surface between the display area and the non-display area.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: September 20, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventor: SungHwan Park
  • Patent number: 9389259
    Abstract: Described herein are systems and methods that facilitate the measurement of the capacitance of high voltage devices while shielding an active device involved in the measurement from the high voltage. The systems and methods employ capacitors to store the high voltage such that the active device does not experience the high voltage. Placement of a reset device ensures that the active device is shielded from the high voltage.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: July 12, 2016
    Assignee: SEMTECH CORPORATION
    Inventor: Michel Alain Chevroulet
  • Patent number: 9306560
    Abstract: In one embodiment, a method includes modifying a voltage at a capacitance of a touch sensor to a first voltage level. The method also includes modifying the voltage at the capacitance to a second voltage level, resulting in a first current. The method also includes modifying a voltage at an integration capacitor to a charging-voltage level based on the first current. The method also includes determining whether a touch input to the touch sensor has occurred based on the charging-voltage level.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: April 5, 2016
    Assignee: Atmel Corporation
    Inventor: Tajeshwar Singh
  • Patent number: 9280013
    Abstract: Provided is a highly reliable configuration of a one glass solution touch panel, in which a sensor electrode and a wiring line can be reliably connected to each other. A touch panel (1) is provided with: an insulating substrate (10) having a sensing area (V) and a non-sensing area (P); sensor electrodes (11, 12), which are formed in the sensing area (P); terminals (13), which are formed in the non-sensing area (P); wiring lines (14), which electrically connect the sensor electrodes (11, 12) and the terminals (13); a light-shielding layer (171), which is formed to cover the non-sensing area (P); and a planarizing film (172), which is formed to cover the light-shielding layer (171). The planarizing film (172) is formed only in the non-sensing area (P).
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: March 8, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Katsunori Misaki
  • Patent number: 9268441
    Abstract: An active integrator for sensing capacitance of a touch sense array is disclosed. The active integrator is configured to receive from the touch sense array a response signal having a positive portion and a negative portion. The response signal is representative of a presence or an absence of a conductive object on the touch sense array. The active integrator is configured to continuously integrate the response signal.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: February 23, 2016
    Assignee: PARADE TECHNOLOGIES, LTD.
    Inventors: Paul Walsh, Hans W. Klein, Keith O'Donoghue, Erik Anderson, Erhan Hancioglu, Gajender Rohilla
  • Patent number: 9195353
    Abstract: An operating method of a touch controller includes receiving a plurality of currents through a plurality of channels, respectively, sensing a first current among the plurality of currents and extracting the sensed first current as a first control current and converting a charge corresponding to a difference between the first control current and a second current among the plurality of currents into an output voltage.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: November 24, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: San-Ho Byun, Ki-Duk Kim, Yoon Kyung Choi
  • Publication number: 20150144475
    Abstract: An apparatus, such as a set-top box, includes at least one capacitive touch button with a guard feature that provides, among other things, the ability to detect and reject false touches. According to an exemplary embodiment, the apparatus includes a first conductive element that is capacitively isolated from ground, and a second conductive element that is capacitively isolated from ground and located adjacent to the first conductive element. A first sensor is coupled to the first conductive element and measures a change in capacitance between the first conductive element and ground due to a change in physical environment. A second sensor is coupled to the second conductive element and measures a change in capacitance between the second conductive element and ground due to the change in physical environment. A controller is coupled to the first sensor and the second sensor and determines a difference between the measured changes in capacitance of the first sensor and the second sensor.
    Type: Application
    Filed: May 15, 2012
    Publication date: May 28, 2015
    Inventor: Ronald Douglas Johnson
  • Publication number: 20150145535
    Abstract: A measuring circuit for a proximity sensor, comprising a charge amplifier in a floating voltage domain that is driven by a square waveform. The output signal is sampled synchronously with the voltage of the floating domain, and demodulated by measuring the voltage steps amplitude. This approach is compatible with a switched capacitor implementation and allows discriminating the capacity signal from the ambient noise; the latter can be evaluated independently.
    Type: Application
    Filed: December 4, 2014
    Publication date: May 28, 2015
    Inventors: Olivier Nys, Pascal Monney, Daniel Aebischer
  • Publication number: 20150137782
    Abstract: Various embodiments of the invention increase current monitoring accuracy in switching converters. In particular, certain embodiments of the invention allow reduce noise associated with transients that are typically generated at transitions when power FETs are turn on and off and allow to accurately sense inductor DC current of switching converters, thereby, increase current monitoring accuracy without requiring any blanking circuitry. In certain embodiments of the invention, this is accomplished by an acquisition circuit that dynamically monitors current in various operating modes. A phase frequency detector (PFD) and control circuit in the acquisition circuit automatically align a narrow sampling window and the midpoint of a turn-on signal. Certain embodiments utilize an analog multiplier circuit to sense current in skip mode operation.
    Type: Application
    Filed: March 25, 2014
    Publication date: May 21, 2015
    Applicant: Maxim Integrated Products, Inc.
    Inventors: Jian Wang, Kevin Wendell Dowdy, Dale Alan Kemper
  • Patent number: 9024644
    Abstract: A waveform dividing method for a capacitive touch control device saves a first waveform in a direction, and then saves a multi-touch waveform in the direction when another object further touches the capacitive touch control device. If the multi-touch waveform is identified as having waveform overlapping, a second waveform is extracted from the difference between the multi-touch waveform and the first waveform. By calculating with the second waveform, accurate positioning of the objects on the capacitive touch control device can be achieved.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: May 5, 2015
    Assignee: Elan Microelectronics Corporation
    Inventors: Tsung-Hsien Wu, Kuo-Ming Huang
  • Publication number: 20150115982
    Abstract: Embodiments of the present invention provide a variety of structures and method for detecting abnormalities in the back-end-of-line (BEOL) stack and BEOL structures located in close proximity to through-silicon vias (TSVs) in a 3D integrated chip. The detected abnormalities may include stress, strain, and damage that will affect metallization continuity, interfacial integrity within a metal level, proximity accuracy of the TSV placement, and interlevel dielectric integrity and metallization-to-TSV dielectric integrity. Additionally, these structures in conjunction with each other are capable of determining the range of influence of the TSV. That is, how close to the TSV that a BEOL line (or via) needs to be in order to be influenced by the TSV.
    Type: Application
    Filed: October 31, 2013
    Publication date: April 30, 2015
    Applicant: International Business Machines Corporation
    Inventors: Fen Chen, Mukta G. Farooq, John A. Griesemer, Chandrasekharan Kothandaraman, John Matthew Safran, Timothy Dooling Sullivan
  • Publication number: 20150109002
    Abstract: A method for recognizing a manipulation of at least one electrical line includes determining a parameter that is dependent on a resistance and a capacity, a resistance and an inductivity, or a resistance, a capacity, and an inductivity of the electrical line; comparing the determined parameter to a reference parameter to provide a comparison result; and recognizing a manipulation of the electrical line based on the provided comparison result.
    Type: Application
    Filed: March 14, 2013
    Publication date: April 23, 2015
    Inventors: Markus Dichtl, Bernd Meyer
  • Publication number: 20150102827
    Abstract: A method of operating a touch screen sensor integrated circuit includes: receiving a plurality of current signals through a plurality of pins, wherein each current signal is generated according to mutual capacitance in response to a modulation signal; sensing the current signals and generating a plurality of sensed current signals corresponding to each of the current signals; and generating a plurality of subtracted current signals, wherein each subtracted current signal is generated by performing a subtraction on sensed current signals corresponding to a pair of the pins.
    Type: Application
    Filed: September 4, 2014
    Publication date: April 16, 2015
    Inventors: San Ho Byun, Jun Chul Park, Ki Duk Kim, Yoon Kyung Choi
  • Publication number: 20150097584
    Abstract: An apparatus for and a method of sensing capacitance of one or more sensor elements in multiple capacitance sensing modes, including a self-capacitance sensing mode and a mutual capacitance sensing mode.
    Type: Application
    Filed: October 14, 2014
    Publication date: April 9, 2015
    Inventors: Viktor Kremin, Andriy Maharyta
  • Publication number: 20150097583
    Abstract: Relative capacitance of a plurality of capacitive sensors may be monitored by using only one ADC conversion. A plurality of capacitive sensors individually charges a sample and hold capacitor. After all of the plurality of capacitive sensors have charged the sample and hold capacitor, a digital conversion of the resulting analog on the sample and hold capacitor is made and stored in a memory. This stored digital collective voltage is compared to a previously stored one and if different then a proximity/touch event may have occurred. Therefore, an entire panel of capacitive sensors may be quickly monitored for a change in the “group” capacitance thereof, or portions of the capacitive sensors may be monitored for a change in the “subgroup” capacitance thereof. By knowing which subgroup of capacitive sensors has changed its collective capacitive value, a more focused and selective capacitive sensor measurement can be made that uses less power.
    Type: Application
    Filed: October 1, 2014
    Publication date: April 9, 2015
    Inventor: Xiang Gao