Patents Examined by Ann Hoang
  • Patent number: 9153958
    Abstract: Embodiments of an electrostatic discharge (ESD) protection device and a method of operating an ESD protection device are described. In one embodiment, an ESD protection device for an integrated circuit (IC) device includes a bigFET configured to conduct an ESD current during an ESD event and a trigger device configured to trigger the bigFET during the ESD event. The trigger device includes a slew rate detector configured to detect the ESD event, a driver stage configured to drive the bigFET, and a keep-on latch configured to keep the driver stage turned on to drive a gate terminal of the bigFET with a driving voltage that is insensitive to a pre-bias on a drain terminal or a source terminal of the bigFET. Other embodiments are also described.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: October 6, 2015
    Assignee: NXP B.V.
    Inventors: Gijs de Raad, Paul Cappon, Albert Jan Huitsing
  • Patent number: 9154122
    Abstract: A device is presented. The device includes a first circuit coupled to first and second power rails of the device. The first circuit is subject to a latch up event in the presence of a latch up condition. The latch up event includes a low resistance path created between the first and second power rails. The device also includes a latch up sensing (LUS) circuit coupled to the first circuit. The LUS circuit is configured to receive a LUS input signal from the first circuit and generates a LUS output signal to the first circuit. When the input signal is an active latch up signal which indicates the presence of a latch up condition, the LUS circuit generates an active LUS output signal which creates a break in the low resistance path to terminate the latch up event.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: October 6, 2015
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Da-Wei Lai, Mahadeva Iyer Natarajan
  • Patent number: 9099859
    Abstract: Provided is an electro-static discharge protection circuit, an array substrate and a display apparatus, being capable of reducing power consumption while improving reliability of the display apparatus.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: August 4, 2015
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhongyuan Wu, Liye Duan
  • Patent number: 9099875
    Abstract: A reverse-connection protecting device comprises an interface, a battery control module and an activation module. The interface includes first and second lead-in ends coupled to respective ones of first and second lead-out ends. The second lead-in end is couplable to a negative terminal of a backup battery. The second lead-out end is couplable to each negative terminal of a load and an external power supply. The battery control module is coupled to the first lead-in end of the interface and couplable to a positive terminal of the backup battery. The battery control module is configured to control the charging or discharging of the backup battery. The activation module is coupled to the battery control module, and couplable to the load and the external power supply.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: August 4, 2015
    Assignee: BYD Company Limited
    Inventors: Qiuping Pan, Qingfei Zheng, Xiangjun Dai
  • Patent number: 9088156
    Abstract: An electric switch is disclosed, in particular an electric circuit breaker. In at least one example embodiment, the switch includes a measuring channel for measuring an electric measured variable and is switched off when the result of a measurement reaches or exceeds a limit value. To test the mode of operation of the measuring channel, the electric measured variable is switched to a reference channel and a reference signal source is switched to the measuring channel and the reference result obtained via the measuring channel is compared with a reference setpoint. The switch is also tripped if, to test the mode of operation of the measuring channel, the electric measured variable is switched to the reference channel and the result obtained via the reference channel reaches or exceeds the limit value.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: July 21, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Andre Borgwardt, Thomas Driehorn, Peter Kopaczewski, Andreas Krauβ, Aron-Ernst Musiol, Gerd Müller
  • Patent number: 9082804
    Abstract: An electrostatic clamp which more effectively removes built up charge from a substrate prior to removal is disclosed. Currently, the lift pins and the ground pins are the only mechanism used to remove charge from the substrate after implantation. The present discloses describes an electrostatic chuck in which the top dielectric surface has an embedded conductive region, such as a ring shaped conductive region in the sealing ring. Thus, regardless of the orientation of the substrate during release, at least a portion of the substrate will contain the conductive region on the dielectric layer of the workpiece support. This conductive region may be connected to ground through the use of conductive vias in the dielectric layer. In some embodiments, these conductive vias are the fluid conduits used to supply gas to the back side of the substrate.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: July 14, 2015
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Julian Blake, Dale K. Stone, Lyudmila Stone, David Suuronen, Shigeo Oshiro
  • Patent number: 9042071
    Abstract: A breaker failure protection system for a high voltage direct current, HVDC, circuit breaker is provided. The circuit breaker is arranged for interrupting a DC circuit upon reception of a trip signal. The protection system includes a current sensor, at least one inductor, and a breaker failure detection unit. The current sensor is arranged for measuring a current I(t) through the DC circuit. The at least one inductor is connected in series with the DC circuit. The breaker failure detection unit is arranged for assessing, whether the circuit breaker has failed, and sending, if the circuit breaker has failed, a trip signal to an adjacent circuit breaker. The assessment is based on the measured current. The stability of HVDC grids may be improved by sending, in case of a breaker failure, a trip signal to adjacent circuit breakers. Further, a method of breaker failure protection for an HVDC circuit breaker is provided.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: May 26, 2015
    Assignee: ABB RESEARCH LTD
    Inventors: Bertil Berggren, Jianping Wang, Juiping Pan, Kerstin Linden, Reynaldo Nuqui
  • Patent number: 9036321
    Abstract: A transport and storage container for liquids, having an inner container, an outer casing and an underframe with a bottom for supporting the inner container, and electrically non-conductive support legs. At least one support leg has a shaped sheet metal part to dissipate an electrostatic charge from the inner container. The end of the shaped part closest to the inner container has a container contact section for conductive connection with the bottom or the outer casing, and a standing contact section for conductive connection with the standing surface. The contact conductor section of the shaped part extends inside a cavity in the support leg and the standing contact section has a ground contact surface and a stack contact surface. These contact surfaces are connected by an offset element in the standing contact section and the stack contact surface is arranged above the ground contact surface in a vertical direction.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: May 19, 2015
    Assignee: PROTECHNA S.A.
    Inventor: Udo Schütz
  • Patent number: 9036326
    Abstract: An electrostatic clamp is provided having a clamping plate, wherein the clamping plate has a central region and an annulus region. A plurality of gas supply orifices are defined in the central region of the clamping plate, wherein the plurality of gas supply orifices are in fluid communication with a pressurized gas supply, and wherein the pressurized gas supply is configured to provide a cushion of gas between the clamping surface and the workpiece in the central region of the clamping plate via the plurality of gas supply orifices. One or more gas return orifices defined in one or more of the central region and annulus region of the clamping plate, wherein the one or more gas return orifices are in fluid communication with a vacuum source, therein generally defining an exhaust path for the cushion of gas.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: May 19, 2015
    Assignee: Axcelis Technologies, Inc.
    Inventors: William David Lee, Marvin Raymond LaFontaine, Ashwin Madhukar Purohit, Joseph Daniel Gillespie, Donovan Beckel, Teng Chao Tao, Alexander Henry Slocum, Samir Nayfeh
  • Patent number: 9019674
    Abstract: In one general aspect, an apparatus can include an overvoltage protection portion, and an overcurrent protection portion operably coupled to the overvoltage protection portion such that heat produced by the overcurrent protection portion at a current below a rated current of the overcurrent protection portion causes the overvoltage protection portion to change from a voltage regulation state to a shorted state.
    Type: Grant
    Filed: December 31, 2010
    Date of Patent: April 28, 2015
    Assignee: Fairchild Semiconductor Corporation
    Inventor: Adrian Mikolajczak
  • Patent number: 8982523
    Abstract: Embodiments provide a charge pump circuit which produces a bias voltage that is applied to a transient suppression device used to clamp both positive and negative transients on signal lines. The bias voltage can be set to a level that is above the sum of a DC voltage differential between positive and negative signal lines and the maximum signal voltage.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: March 17, 2015
    Assignee: Cambium Networks, Ltd
    Inventors: Alexander C. Kidger, Nigel J. R. King, Timothy G. Wild
  • Patent number: 8976505
    Abstract: A method for controlling a glow plug in a diesel engine, in particular in the preheating phase, is described. According to the invention, it is provided that the time gradient of an electrical variable which varies according to the temperature of the glow plug is measured and compared with a threshold value, and when said time gradient exceeds or drops below the threshold value, the electric supply voltage of the glow plug is changed.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: March 10, 2015
    Assignee: BorgWarner BERU Systems GmbH
    Inventors: Markus Kernwein, Olaf Toedter
  • Patent number: 8958191
    Abstract: A fire protection device for preventing damage to a domestic appliance from a malfunction which occurs in the appliance. The fire protection device includes at least one fault current circuit breaker, which disconnects the electrical supply from the appliance when a fault current is sensed. The fire protection device also includes at least one gas sensor which also disconnects the electrical supply from the appliance when a predetermined quantity of a control gas is sensed in the appliance.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: February 17, 2015
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Helmut Jerg, Stefan A. Staedel
  • Patent number: 8953292
    Abstract: Embodiments of bus interface circuitry and methods for short circuit detection are generally described herein. Other embodiments may be described and claimed. In some embodiments, the bus interface circuitry comprises logic circuitry to compare a driver stage output signal at a bond pad to internal reference voltages to generate control signals indicative of whether a short-circuit condition exists on a bus. The driver stage of the bus interface may be temporarily disabled when a short-circuit condition is indicated by the control signals.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: February 10, 2015
    Assignee: Infineon Technologies AG
    Inventors: Andreas Hebenstreit, Werner Höllinger
  • Patent number: 8953291
    Abstract: The present invention discloses a reversal connection protecting circuit. The reversal connection protecting circuit includes a power supply interface, a secondary battery, a reversal connection driving unit and a power switching unit. The reversal connection protecting circuit further includes an anti-reversal unit. And the reversal connection protecting circuit further includes a processing unit and a warning interface. According to the present invention, the inconvenience brought by substituting a fuse that is melted in a protecting circuit under the condition that the power supply of the protecting circuit is reversely connected in prior art is overcome.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: February 10, 2015
    Assignee: BYD Company Limited
    Inventors: Yaozhong Mi, Xiangjun Dai, Qingfei Zheng, Mingxing Li
  • Patent number: 8947840
    Abstract: Methods and apparatus improve the signal integrity of high-speed integrated circuits. Disclosed is a passive network for an input to a receiver. One embodiment of the passive network has two coupled inductors to improve both return loss and insertion loss characteristics. A shunt inductor is connected in series with the termination resistance, while a series inductor is placed in series between the pad and receiver circuitry. By exploiting deliberately-introduced mutual coupling between these two inductors, an area-efficient passive network is created that improves both the return loss and input bandwidth.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: February 3, 2015
    Assignee: PMC-Sierra, Inc.
    Inventors: Vadim Milirud, Tomas Dusatko, Predrag Acimovic
  • Patent number: 8947846
    Abstract: A device for protecting piping from lightning. The piping includes tubular metal sections connected to each other by connection parts, a first portion of the connection parts being plastic material parts and a second portion of the connection parts being metal parts.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: February 3, 2015
    Assignee: Airbus Operations S.A.S.
    Inventors: Alexis Courpet, Thomas Barre, Matthieu Biteau, Olivier Bourbon, Jean Marc Roques
  • Patent number: 8941968
    Abstract: An electrostatic clamp is provided, having a clamping plate, wherein a clamping surface of the clamping plate is configured to contact the workpiece. A voltage applied to one or more electrodes selectively electrostatically attracts the workpiece to the clamping surface. One or more auxiliary clamping members are further provided wherein the one or more auxiliary clamping members are configured to selectively secure at least a portion of the workpiece to the clamping surface. A temperature monitoring device configured to determine a temperature of the workpiece is provided, and a controller is configured to selectively clamp the workpiece to the clamping surface via a control of the voltage to the one or more electrodes and the one or more auxiliary clamping members, based, at least in part, on the temperature of the workpiece.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: January 27, 2015
    Assignee: Axcelis Technologies, Inc.
    Inventors: Perry J. I. Justesen, Allan D. Weed, William Davis Lee, Ashwin M. Purohit, Robert D. Rathmell, Gary M. Cook
  • Patent number: 8941967
    Abstract: Methods for producing a laser-guided underwater electrical discharge are provided. One or more electrodes defining a desired electrical discharge path are situated in a body of water and are attached to an external electrical power supply. A high-powered, intense laser beam is fired into the water. The laser beam forms an optical filament in the water, which in turn forms an ionized channel having a much greater conductivity than the surrounding water. An external power supply drives an electrical discharge along the path of the ionized channel due to its greater conductivity.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: January 27, 2015
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Theodore G. Jones, Antonio C. Ting, Daniel F. Gordon
  • Patent number: 8934204
    Abstract: A surge protection circuit comprises a surge detection circuit 14 for detecting a surge applied to a semiconductor integrated circuit, and a protection element 15 for absorbing the surge. The protection element is connected between a signal terminal for supplying a signal to the semiconductor integrated circuit and a power source terminal for supplying a power source voltage. When the power source voltage is not larger than a voltage enough to normally operate the semiconductor integrated circuit and the surge detection circuit does not detect the surge, the protection element is set in a current limiting state. When the power source voltage is not larger than a voltage enough to normally operate the semiconductor integrated circuit and the surge detection circuit detects the surge, the protection element is set in a current non-limiting state.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: January 13, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroyuki Nakamura