Electric Lamp Patents (Class 324/414)
  • Patent number: 10861925
    Abstract: A display apparatus includes a substrate having a display area and a peripheral area, wirings over the peripheral area that extend in a first through third areas, an interval between the wirings in the second area is greater than an interval between the wirings in each of the first and third areas, an insulating layer covering the wirings and having a first uneven surface corresponding to the wirings, a first conductive layer over the insulating layer and including a second uneven surface corresponding to the first uneven surface, a flat planarization layer over the first conductive layer and exposing at least a portion of the first conductive layer, a second conductive layer electrically connected to the first conductive layer, at least a portion of the second conductive layer is over the planarization layer, and a polarization plate on the second conductive layer.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: December 8, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Joongsoo Moon, Kwangmin Kim, Yangwan Kim, Cheolgon Lee, Youngjin Cho, Changkyu Jin
  • Patent number: 10829042
    Abstract: An imaging apparatus includes an image sensor and an image processor. The image sensor has at least one type of color filter and a specific filter disposed thereon in a manner corresponding to each pixel on a light receiving surface. The specific filter transmits light in a particular wavelength range in which spectral irradiance of sunlight is lower than that in wavelength ranges adjacent to either side of the particular wavelength range. The image processor detects an emission state of a particular light source based on a signal component of an image signal generated by pixels having the specific filters thereon. The particular light source is different from the sunlight.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: November 10, 2020
    Assignee: KYOCERA Corporation
    Inventors: Hiroyuki Sato, Hidetoshi Umeda, Takatoshi Nakata, Shinsuke Tachibana, Yasushi Koshiba, Shota Iwano
  • Patent number: 10807736
    Abstract: A wireless lighting system for an aircraft evacuation system. The wireless lighting system includes a wireless controller disposed in the aircraft having at least a transmitter configured to communicate an activation under an aircraft evacuation event when the aircraft evacuation system is deployed, and a first light source disposed on the aircraft evacuation system, the first light source configured to provide illumination to the aircraft evacuation system. The wireless lighting system also includes a first energy storage device disposed on the aircraft evacuation system and a first wireless receiver disposed on the aircraft evacuation system and configured to receive the activation signal from the wireless controller. The first wireless receiver is operably connected to the first energy storage device and the first light source and configured to activate the first light source based on the activation signal.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: October 20, 2020
    Assignee: GOODRICH CORPORATION
    Inventors: Elangovan Palaniappan, Petchi Subramanian
  • Patent number: 10803800
    Abstract: A display device includes a display panel including pixels, a degradation compensator configured to divide the display panel into one or more unit blocks initially including reference pixels, to calculate a stress data using the unit blocks, and to compensate an image data to generate a compensation data based on an accumulate stress data including an accumulation of the stress data, a data driver configured to generate a data signal based on the compensation data provided from the degradation compensator, and to provide the data signal to the pixels, a scan driver configured to provide a scan signal to the pixels, and a timing controller configured to control the data driver and the scan driver, wherein the degradation compensator is configured to generate the accumulate stress data including the stress data of adjacent pixels that are adjacent to the reference pixels by moving the unit blocks in a moving path.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: October 13, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventor: Boyoung An
  • Patent number: 10780985
    Abstract: An evacuation slide including a sliding face having a top end portion adapted to be positioned adjacent to an exit of a region to be evacuated, and a bottom end portion adapted to be positioned adjacent to an escape route leading away from the region to be evacuated and being arranged at a lower height than the region to be evacuated. A light signal generating device is adapted to generate a light signal which illuminates the bottom end portion of the sliding face.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: September 22, 2020
    Assignee: Airbus Operations GmbH
    Inventors: Carsten Kohlmeier-Beckmann, Fred Raszpir
  • Patent number: 10706755
    Abstract: A repairing method of an organic light emitting diode display, including: a repairability checking step for applying a first positive bias to a pixel including a driving transistor and an organic light emitting diode based on the organic light emitting diode; and a stress applying step for applying a second positive bias that is greater than the first positive bias to the organic light emitting diode.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: July 7, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung Bae Ju, Sang Jin Park, Dong Hyun Yang, In Kyung Yoo
  • Patent number: 10602596
    Abstract: Various embodiments relate to systems and methods for controlling one or more LED-based lighting sources that are coupled to a logic module by a ribbon cable. The ribbon cable allows some or all of the processing components (e.g., processors and drivers) to be decoupled from the LED-based lighting source(s). The processing components can instead be housed within the logic module, which is able to simultaneously control the LED-based lighting source(s). Together with color models established for each LED board, the logic module acts as a platform for modularity and is able to more precisely control the color channels of each LED-based lighting source using the color models established for those LED-based lighting source(s). Techniques are also described herein that allow the logic module to utilize data stored within an erasable programmable read-only memory (EPROM) that describes the color characteristics of an LED-based lighting source.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: March 24, 2020
    Assignee: Lumenetix, LLC
    Inventors: David Bowers, Thomas Poliquin, Dustin Cochran, Matthew D. Weaver, Jay Hurley, James Kingman, Bryant Grigsby, Sanjoy Ghose
  • Patent number: 10502400
    Abstract: A method for performing self-diagnosis in a light fixture. The method includes receiving data corresponding to a plurality of environmental conditions from one or more sensors. The one or more sensors are positioned in a sensor cavity of a light fixture wherein a plurality of conduits provide a sealed path between a plurality of LED modules of the light fixture and the sensor cavity such that the LED modules, the conduits and the sensor cavity exhibit a plurality of environmental conditions. The method also includes analyzing the data to determine if at least one of the plurality of environmental conditions has undergone one or more of the following changes: a change so that a value of the at least one environmental condition exceeds a threshold level, a threshold change compared to a corresponding constant level, or a rate of change that is greater than a threshold value.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: December 10, 2019
    Assignee: Eaton Intelligent Power Limited
    Inventors: Walten P. Owens, Christopher D. Nolan, Joseph R. Casper
  • Patent number: 10431061
    Abstract: In some embodiments, apparatuses and methods are provided herein useful to presenting a virtual representation of a user's environment based on activity in the user's environment. In some embodiments, a system comprises one or more sensors, wherein the one or more sensors are located about the user's environment and configured to detect the activity within the user's environment and transmit, to a control circuit, indications of the activity, the control circuit configured to receive, from the one or more sensors, the indications of the activity within the user's environment, generate the virtual representation of the user's environment, and render, based on the indications of the activity, the virtual representation of the user's environment to include representations of the activity within the user's environment, and a display device, the display device configured to present the virtual representation of the user's environment including the representations of the activity within the user's environment.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: October 1, 2019
    Assignee: Walmart Apollo, LLC
    Inventors: David Tovey, Todd D. Mattingly, Donald R. High, Tim W. Webb, Eugene P. Sunday
  • Patent number: 10360016
    Abstract: A method comprising: providing a light source in the form of a luminaire or lamp operable to emit light into an environment, the light source being activated from a time at which the light source is first deployed into said environment to enable the light to be controlled via a first communication channel, but having a capability for the light to be controlled via a second communication channel being electronically deactivated at the time of deployment; then after the time of deployment of the light source into the environment, receiving a request to upgrade the light source; and in response to this request, sending activation data to the light source or a user of the light source, thereby enabling the capability for the light to be controlled via the second communication channel to be electronically activated.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: July 23, 2019
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Peter Deixler, Jean-Paul Jacobs
  • Patent number: 10362663
    Abstract: A luminaire includes a microcontroller and program logic that calculates the operational age of a light engine that includes a plurality of light emitting diodes connected in series. The program logic uses changes in transition voltage to calculate the operational age of a light engine. Changes in forward voltage across the light engine are used to detect sudden catastrophic failure of individual light emitting diodes. In response to the sudden catastrophic failure of one of the light emitting diodes, the program logic adjusts the power provided to the light engine based on the calculated operational age of the light engine. For example, the operational age of the light engine may be compared with a warrantied lifespan, and the power may be adjusted to increase the likelihood of compliance with the warranty.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: July 23, 2019
    Assignee: OSRAM SYLVANIA Inc.
    Inventor: Marijan Kostrun
  • Patent number: 10123389
    Abstract: A device for providing power to a light arrangement (1) having a current conducting state and a current blocking state.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: November 6, 2018
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Hongxin Chen, Hong Chen
  • Patent number: 10081301
    Abstract: A lighting circuit for blinking a light-emitting unit having plural light sources is equipped with an abnormality detection unit which generates abnormality information when detecting an abnormality in even one of the plural light sources, and a holding circuit which holds the abnormality information during a period when the lighting circuit is supplied with a blinking signal. The lighting circuit supplies a drive current(s) to the plural light sources according to the blinking signal and stops supplying a drive current(s) to all of the plural light sources according to the abnormality information being held by the holding circuit.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: September 25, 2018
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventor: Shinji Ohta
  • Patent number: 10068510
    Abstract: A display panel is discussed. The display panel according to an embodiment includes driver integrated circuits (ICs); data lines disposed in an active region; input pads disposed in a pad region; output pads disposed in a first inspection circuit included in the pad region, the output pads receiving first signals from the input pads; and a first switching circuit disposed in the first inspection circuit and connected to the output pads. The first switching circuit is configured to supply the first signals to the data lines. The display panel further includes first signal lines configured to supply the first signals to the output pads; a second switching circuit disposed in a second inspection circuit and connected to the data lines in the active region; and a second signal line configured to supply second signals to the second switching circuit.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: September 4, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventor: JunYeob Lee
  • Patent number: 9985087
    Abstract: The present patent application is related to the field of display devices, and provides a display device with panel test circuit the attenuation of data voltage signal could be reduced in the programs of testing pixel array. The display device comprises a plurality of first and second type of bonding pads located on the substrate and around periphery of the pixel array, and the panel test circuit has transistors, the transistors are disposed on the substrate and around periphery of the pixel array, a plurality of data lines of the pixel array are electrically connected with the second type of bonding pads one-to-one, and data detection signal applied to the first type of bonding pads is transmitted to the second type of bonding pads through the panel test circuit.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: May 29, 2018
    Assignee: EVERDISPLAY OPTRONICS (SHANGHAI) LIMITED
    Inventors: Jie Ni, Sisi Zhou
  • Patent number: 9970994
    Abstract: To provide an electronic device that can detect an abnormality in an element with a simple configuration. An electronic device 1 includes: a first element string group 21 formed by at least one element string 211 to 21m connected in parallel, the element string 211 to 21m being formed by at least one element connected in series; a second element string group 22 formed by the element string 221 to 22n being at least one in number and connected in parallel; and an abnormality detecting unit 4 that detects an abnormality in the element string 211 to 21m and 221 to 22n forming at least one of the first element string group 21 and the second element string group 22, based on whether or not a first current I21 being the sum of current flowing through the element string 211 to 21m forming the first element string group 21 and a second current I22 being the sum of current flowing through the element string 221 to 22n forming the second element string group 22 satisfy a prescribed relationship.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: May 15, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuta Ikawa, Ken Sumitani, Tsuyoshi Ono
  • Patent number: 9883565
    Abstract: A method for operating an optoelectronic assembly which includes at least one component string having at least one section, wherein the section includes at least one light emitting diode element, is provided. According to the method, the component string is supplied with electrical energy, the supply of the component string with electrical energy is interrupted, a total voltage is detected, which is present between an input and an output of the section of the component string, the total voltage is compared with a sum of threshold voltages of all the light emitting diode elements. It is identified that the section has no short circuit if the total voltage is equal or at least approximately equal to the sum of the threshold voltages, and/or it is identified that the section has a short circuit if the total voltage is less than the sum of the threshold voltages.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: January 30, 2018
    Assignee: OSRAM OLED GmbH
    Inventor: Kilian Regau
  • Patent number: 9848476
    Abstract: A method for operating an optoelectronic assembly which includes at least one component string having at least one section, wherein the section includes at least one light emitting diode element, is provided. According to the method, the component string is supplied with electrical energy, the supply of the component string with electrical energy is interrupted, a total voltage is detected, which is present between an input and an output of the section of the component string, the total voltage is compared with a sum of threshold voltages of all the light emitting diode elements. It is identified that the section has no short circuit if the total voltage is equal or at least approximately equal to the sum of the threshold voltages, and/or it is identified that the section has a short circuit if the total voltage is less than the sum of the threshold voltages.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: December 19, 2017
    Assignee: OSRAM OLED GmbH
    Inventor: Kilian Regau
  • Patent number: 9839093
    Abstract: A self-healing overtemp circuit is described and illustrated comprising a temperature sensing circuit, a voltage sensing circuit, and optionally, a current sensing circuit. The self-healing overtemp circuit is designed to ramp down power in an LED lighting system (or other electrical circuit) in response to a sensed or impending thermal runaway (and optionally, overcurrent) event. Said thermal runaway and overcurrent events may be a result of failure of one or more components (e.g., driver, active cooling means) of the lighting system. The self-healing overtemp circuit further comprises means of restoring power to said LEDs in a manner that avoids (i) a perceivably bright flash of light or (ii) increased risk of component failure.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: December 5, 2017
    Assignee: Musco Corporation
    Inventors: David L. Blanchard, Andrew J. Schembs
  • Patent number: 9832838
    Abstract: In various embodiments, an optoelectronic assembly may include at least one organic light emitting diode including a first light emitting diode element and a second light emitting diode element, and an electronic circuit. The first light emitting diode element and the second light emitting diode element are electrically connected in parallel and are deposited monolithically on a common substrate, and the electronic circuit is designed to compare an electric current through the first light emitting diode element that flows during operation with an electric current through the second light emitting diode element that flows during operation and, depending on the comparison, to detect a short circuit of the first light emitting diode element or of the second light emitting diode element and to initiate an electrical switching off of one of the light emitting diode elements and/or of the assembly.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: November 28, 2017
    Assignee: OSRAM OLED GmbH
    Inventors: Arne Fleissner, Daniel Riedel, Nina Riegel, Silke Scharner, Johannes Rosenberger, Thomas Wehlus
  • Patent number: 9651420
    Abstract: A light sensor assembly includes a base configured to be fixedly mounted to a housing of a light fixture. The base holds contacts configured to be electrically connected to terminals of the light fixture. A photocell module is provided on the base and includes a photocell electrically connected to the contacts. A sensor lid is coupled to the base. The sensor lid has a lightpipe directing light from an exterior of the sensor lid to the photocell. The sensor lid is variably positionable at different angular positions relative to the base to change an orientation of the lightpipe relative to the photocell.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: May 16, 2017
    Assignee: TE CONNECTIVITY CORPORATION
    Inventor: Ronald Martin Weber
  • Patent number: 9500719
    Abstract: According to one embodiment, a diagnostic device (8) for identifying a defect in an LED light string includes a probe (18) and a polarity selector switch (16). The LED light string includes a conductor provided within an insulation layer. The probe (18) is configured to penetrate the insulation layer and contact the conductor of an LED light string. The polarity selector switch (16) is electrically coupled to the probe (18) and configured to control the polarity of an electrical waveform provided to the probe (18).
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: November 22, 2016
    Assignee: ULTA-LIT TREE CO.
    Inventors: Dennis Blair Cherry, John DeCosmo, Howard L. Frank
  • Patent number: 9442155
    Abstract: A system and method of testing High Brightness LED (HBLED) is provided, and more particularly, a system and method of Controlled Energy Testing of HBLED with improved accuracy and repeatability is provided. In one embodiment, the system includes a programmable constant power source for providing a constant power to a Device Under Test (DUT), in this case, an HBLED, wherein the programmable constant power source adjusts an output voltage or an output current to ensure that a given amount of power is supplied to the HBLED for a predetermined amount of time and to provide precise control of a junction temperature of the HBLED for the duration of the test sequences; a Parametric Measurement Unit (PMU) including a processor for executing a plurality of HBLED test sequences, and a spectrometer for measuring a set of HBLED parameters including power and color (wavelength) of an optical output of the HBLED; and a controller for coordinating timing of acquiring the set of measured HBLED parameters.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: September 13, 2016
    Assignee: Sof-Tek Integrators, Inc.
    Inventors: Daniel Creighton Morrow, Jonathan Leigh Dummer
  • Patent number: 9229065
    Abstract: A detection apparatus for light-emitting diode chip comprising a substrate with the function of photoelectric conversion and a probing device is disclosed. The substrate is designed to bear at least one light-emitting diode chip. The probing device comprises a power supply and at least two conductive elements. The two ends of the conductive elements are respectively electrically connected to the light-emitting diode chip and the power supply to enable the light-emitting diode chip to emit light beams. Some of the light beams are emitted from the light-emitting diode chip toward the substrate such that the light beams emitted by the light-emitting diode chip are converted into an electric signal by the substrate.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 5, 2016
    Assignee: Genesis Photonics Inc.
    Inventors: Tai-Wei Wu, Tai-Cheng Tsai, Hsin-Hung Lin, Ping-Tsung Tsai, Pei-Yi Huang, Gwo-Jiun Sheu, Shou-Wen Hsu, Yun-Li Li
  • Patent number: 9226368
    Abstract: The subject matter included in this disclosure can be embodied in a method that includes receiving information representative of a location and status of a streetlight included in a network of streetlights, and detecting, using a computing device, a fault condition of the streetlight, based on the status information. The method also includes determining, using the computing device, a corrective action to resolve the fault condition, and transmitting information related to the corrective action, including instructions for a human personnel to follow, for resolving the fault condition.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: December 29, 2015
    Assignee: CIMCON Lighting, Inc.
    Inventor: Anil Agrawal
  • Patent number: 9091721
    Abstract: The disclosure provides a system and method for multi-functional online testing of semiconductor light-emitting devices or modules. The system includes an electrical characteristic generating and testing equipment, one or more optical characteristic detecting and controlling equipments, an optical signal processing and analyzing equipment, one or more thermal characteristic detecting equipments, a central monitoring and processing computer, a multi-channel integrated drive controlling equipment, one or more multi-stress accelerated degradation controlling equipments, and one or more load boards. The present disclosure enables in-situ online monitoring and testing under accelerated degradation in a multi-stress accelerated degradation environment.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: July 28, 2015
    Assignee: INSTITUTE OF SEMICONDUCTORS, CHINESE ACADEMY OF SCIENCES
    Inventors: Lixia Zhao, Zichao Zhou, Hua Yang, Junxi Wang, Jinmin Li
  • Publication number: 20150137709
    Abstract: A backlight module is disclosed. The backlight module comprises a circuit board, at least one light source disposed on the circuit board, and a positive probe-point and a negative probe-point, both provided on the circuit board. The positive and negative probe-points are electrically connected to the light source, and the positive probe-point and the negative probe-point are electrically connected with a current dividing element so that the light source is connected in parallel with the current dividing element. The positive probe-point and the negative probe-point are also collectively configured to detect an electrostatic damage of the backlight module.
    Type: Application
    Filed: March 19, 2014
    Publication date: May 21, 2015
    Applicants: Tianma Micro-Electronics Co., Ltd., Shanghai AVIC Optoelectronics Co., Ltd.
    Inventors: Kangkang PING, Dekai Chen, Rongrong Jing, Xueping Wu, Zhuocong Li, Zhengyuan Huang
  • Publication number: 20150123667
    Abstract: A method of performing a hot test of a packaged phosphor converted light-emitting diode (pc-LED) includes selectively heating portions of the phosphor layer using a laser to provide a predetermined temperature gradient in the phosphor layer. The selective heating can directly heat the silicone in a silicone-based phosphor layer, or directly heat the active ion(s) of the phosphor in a Lumiramicâ„¢-based phosphor or even the active ion(s) of a silicone-based phosphor layer. A current is applied to the InGaN film to establish a predetermined temperature at the InGaN film junction, the film junction being adjacent to the phosphor layer. Photometric measurements are performed on the LED after the selective heating and during the applied electroluminescent current. This method quickly establishes the temperatures and temperature gradients in the LED consistent with those of an operating, product-level LED, thereby ensuring accurate binning of the LED.
    Type: Application
    Filed: January 5, 2015
    Publication date: May 7, 2015
    Inventor: Richard W. Solarz
  • Publication number: 20150116298
    Abstract: An exemplary embodiment of the present invention discloses a voltage generation circuit of a display apparatus, including at least one resistor, a memory configured to store a resistance value set signal, a controller changing a resistance value of the resistor referring to the resistance value set stored in the memory, and a voltage generator connected to one end of the resistor and is configured to receive an input current corresponding to the resistance value of the resistor and generate a gate-on voltage corresponding to the input current.
    Type: Application
    Filed: June 5, 2014
    Publication date: April 30, 2015
    Inventors: Jae-Won JEONG, Hyun Seok HONG, Young-Su KIM, Jinhyun KO, Hyelim KIM, Kyung-Uk CHOI, Sangyoung LEE
  • Publication number: 20150108986
    Abstract: This disclosure provides systems, methods and apparatus for measuring capacitance of a display unit, such as an interferometric modulator (IMOD). In one example, a circuit may include an operational amplifier (op-amp), a voltage controlled current source, and feedback from an output of the op-amp as an input to the voltage controlled current source. An output of the voltage controlled current source may be provided to a display unit as well as an input of the op-amp. A second input of the op-amp may be provided a ramping reference voltage.
    Type: Application
    Filed: April 4, 2014
    Publication date: April 23, 2015
    Applicant: QUALCOMM MEMS Technologies, Inc.
    Inventors: Wilhelmus Johannes Robertus Van Lier, Robert Steven Kawamoto, James Steven Edgar, Pramod Kumar Varma
  • Publication number: 20150108988
    Abstract: A diagnostic circuit for inspecting a light-emitting device having light-emitting elements. The diagnostic circuit includes a power source module, a buffer module, and an abnormality detection module. The buffer module includes a plurality of buffers. Each buffer has a buffer input terminal and a buffer output terminal. The buffer input terminal receives a first power source signal from the power source module, and the buffer output terminal outputs a second power source signal to one of the light-emitting elements. The abnormality detection module includes a plurality of comparators. Each comparator has a pair of detection input terminals and a detection output terminal. The detection input terminals is configured to receive the first and second power source signals. The detection output terminal outputs a comparison signal to generate a diagnostic result.
    Type: Application
    Filed: October 16, 2014
    Publication date: April 23, 2015
    Inventor: Harunobu Yoshida
  • Publication number: 20150108987
    Abstract: An apparatus for checking a rear lamp includes a sensor and a controller. The sensor is disposed in at least one rear lamp and configured to obtain a first signal generated from the outside. The controller is configured to turn on the at least one rear lamp according to the first signal.
    Type: Application
    Filed: October 8, 2014
    Publication date: April 23, 2015
    Inventors: Sung Jin SAH, Jin Ho NA, Sung Min PARK, Kwang Myung OH, Hui Sung LEE
  • Patent number: 9013188
    Abstract: Provided is an apparatus for sensing a failure that may apply, using a current control unit, a current to at least one first light emitting diode (LED) string and at least one second LED string that may be connected in parallel with each other, and as a result of sensing whether a failure occurs with respect to each of the at least one first LED string and the at least one second LED string, when a failure is sensed with respect to at least one of the at least one first LED string and the at least one second LED string, may transmit failure information to the current control unit, thereby blocking the entire current that may be applied to the at least one first LED string and the at least one second LED string, using the current control unit.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: April 21, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Kyung Pil Nam
  • Publication number: 20150102814
    Abstract: The present invention is directed, in part, to an apparatus and methods thereof that effectively allow the testing, detection and identification of non-functioning light bulbs used in typical string lighting assemblies set up in series. The invention creates a circuit that determines whether there is a damaged bulb in holiday or occasion lighting assemblies by employing use of a power source, such as for example, a 9-volt battery, two wire leads and two terminals that create an electrical circuit when the terminals are attached to the lighting assembly wiring by means of the terminals. When the test kit is attached and the bulbs fail to illuminate, a user is thereby informed that a bulb within that series is damaged or otherwise non-functional. By further narrowing the number of bulbs tested, the kit allows the user to identify the damaged bulb and replace the bulb quickly and easily.
    Type: Application
    Filed: October 16, 2013
    Publication date: April 16, 2015
    Inventor: Virgil Benton
  • Publication number: 20150091444
    Abstract: A panel for a display device includes a display unit, an electrostatic protection wire, a wire being connected to the display pixels, an electrostatic protection circuit, and an electrostatic protection circuit control line. The display unit includes a plurality of display pixels. The electrostatic protection wire is connected to a test pad, the test pad being provided to receive a test signal. The electrostatic protection circuit connects the electrostatic protection wire and the wire connected to the display pixels. The electrostatic protection circuit includes a back-gate-type transistor that has a gate electrode, a drain electrode being short-circuited with the gate electrode, and a back-gate electrode. The electrostatic protection circuit control line includes a first end and a second end, the first end being connected to the back-gate electrode of the back-gate-type transistor.
    Type: Application
    Filed: September 11, 2014
    Publication date: April 2, 2015
    Inventor: Kouhei EBISUNO
  • Publication number: 20150084637
    Abstract: An assembly for evaluating the state of an electronic unit used for illumination purposes which is designed to detect a plurality of physical parameters that represent the current state of the electronic unit, to compare the detected physical parameters according to possibly mathematical evaluation or analysis alone or in combination with predefined reference values or reference spaces (I, II), and to create information describing the state of the electronic unit to be evaluated on the basis of the comparisons.
    Type: Application
    Filed: April 26, 2013
    Publication date: March 26, 2015
    Inventor: Michael Boehnel
  • Patent number: 8970220
    Abstract: A combination lighting tester tool. The combination lighting tester tool includes at least three independent testing tools for identifying and diagnosing a problem in a lighting system. For example, the tester includes a lamp testing function in which a high voltage test signal is generated and transmitted using an antenna. When the test signal is in proximity to a gas filled lamp, the voltage is of sufficient magnitude to ionize the gas inside the lamp, causing the lamp to illuminate. The tester also includes a ballast testing function in which the power lines or wires connecting a ballast to a lamp or lighting fixture are tested, and a filament tester for testing the filaments in a lamp for continuity or resistance. The tester also includes a worklight for illuminating an area under test and one or more display devices (e.g., LEDs, an LCD display, or the like) which provide an indication of, for example, a test being performed or a result of a test.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: March 3, 2015
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: Jonathan P. Morrow, Evans H. Nguyen, Hu Zenghong, Lin Jianqin
  • Publication number: 20150054515
    Abstract: A printed circuit board assembly includes a printed circuit board, a connector mounted on the printed circuit board and including at least one terminal electrically connected to an external device, and at least one electronic component mounted on the printed circuit board and electrically connected to the at least one terminal of the connector. The connector includes at least one test point electrically connected to the terminal and configured to make contact with a test probe.
    Type: Application
    Filed: January 29, 2014
    Publication date: February 26, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventor: Moonshik Kang
  • Publication number: 20150048835
    Abstract: A device for inspecting an organic light-emitting display apparatus includes a power supply unit, a power receiving unit, a wiring location sensing unit, and a control unit. The power supply unit applies an AC signal to each of wirings arranged in the organic light-emitting display apparatus. The power receiving unit senses an electrical signal from each of the wirings. The wiring location sensing unit senses a location of each of the wirings. The control unit determines whether each of the wirings has a defect based on the sensed electrical signal and information pertaining to each wiring type of the wirings.
    Type: Application
    Filed: April 24, 2014
    Publication date: February 19, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: JUNE-WOO LEE, KWAN-WOOK JUNG, GUANG-HAI JIN, JAE-BEOM CHOI
  • Publication number: 20150042346
    Abstract: A display apparatus is provided. The display apparatus includes a substrate, a display panel on the substrate, and an encapsulation film sealing the display panel. The encapsulation film includes at least one organic layer and/or at least one inorganic layer and at least one pair of conductive layers.
    Type: Application
    Filed: March 11, 2014
    Publication date: February 12, 2015
    Applicants: Seoul National University R&DB Foundation, Samsung Display Co., Ltd.
    Inventors: Min-Ho OH, Yoon-Hyeung Cho, Yong-Tak Kim, So-Young Lee, Jong-Woo Kim, Ji-Young Moon, Hyeong-Joon Kim, Sang-Hyun Park, Hyuk-Jin Kim, Seung-Ha Oh
  • Publication number: 20150042347
    Abstract: A system, apparatus and method for light diffusion and testing fixtures. The system includes remote derangement controls to test the operation of a battery backup system associated with a fixture. The light fixture may incorporate light diffusion features including back mounted light sources, channeled corners in a translucent material and/or pitted surfaces of a translucent material. The system may further include remote monitoring elements and/or sensors to evaluate proper operation of the light diffusion characteristics of a fixture during operation of the battery backup system.
    Type: Application
    Filed: August 11, 2014
    Publication date: February 12, 2015
    Inventor: Mark Scott Wamble
  • Patent number: 8947096
    Abstract: A new portable, self-contained device for testing the full cycle of trailer light modes without additional manual actuation by the user and for identifying where and what type of specific error occurred, if any are detected. The inventive device generally comprises a compact portable housing with a fixedly attached handle and a removable housing top. Within the compact portable housing is a self-contained, rechargeable 12 volt power source to power all functionality over a sustained period of time. Also within the compact portable housing is a light mode control means that allows the device to cycle through multiple light modes for testing, and an error detection analysis means that indicates where and what type of fault is detected.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: February 3, 2015
    Inventor: Paul Wolf
  • Publication number: 20150028876
    Abstract: An apparatus to measure and collect data relating to properties of light for a plurality of light-producing devices comprises a rail having a longitudinal axis along which the plurality of light-producing devices is aligned. A measurement tool is mounted on the rail and moved under motor control to measure the data for each of the plurality of light-producing devices.
    Type: Application
    Filed: July 24, 2014
    Publication date: January 29, 2015
    Inventors: Nathan McLaughlin, Benjamin Smith, Norbert Puetz
  • Publication number: 20150022211
    Abstract: The present disclosure provides a detection circuit for a display panel, comprising: a shorting bar, with connection lines for introducing a test signal or a control signal arranged thereon; a transistor array, the gates of which are connected to the connection lines for introducing the control signal, wherein the connection lines for introducing the test signal are connected with the data lines or the scanning lines of the display panel via the sources and the drains of transistors, under the control signal, and a component, arranged between the gates of the transistor array and the shorting bar, for further reducing or increasing a voltage or current of the gates so that the transistor array can be cut off reliably when the control signal is a signal enabling the transistor array to be cut off. The detection circuit can further reduce the channel length of the thus being advantageous for the design of the narrow frame.
    Type: Application
    Filed: January 17, 2014
    Publication date: January 22, 2015
    Inventors: Peng Du, Je-Hao Hsu, Ming-hung Shih
  • Publication number: 20150015076
    Abstract: In an emergency lighting apparatus, charging efficiency is increased by individually charging cells in a power storage unit. When a power failure or other situation occurs requiring the actual use of the emergency lighting device, the proper operation of the emergency lighting device is ensured. In particular, the disadvantage of additional wiring in a bulb-type lighting fixture and the disadvantage of grounding are addressed so that power can be continuously supplied to the emergency lighting device and the emergency lighting device functions properly.
    Type: Application
    Filed: February 6, 2013
    Publication date: January 15, 2015
    Inventor: Seonghoon Park
  • Publication number: 20150015266
    Abstract: The disclosure provides a system and method for multi-functional online testing of semiconductor light-emitting devices or modules. The system comprises an electrical characteristic generating and testing equipment, one or more optical characteristic detecting and controlling equipments, an optical signal processing and analyzing equipment, one or more thermal characteristic detecting equipments, a central monitoring and processing computer, a multi-channel integrated drive controlling equipment, one or more multi-stress accelerated degradation controlling equipments, and one or more load boards. The present disclosure enables in-situ online monitoring and testing under accelerated degradation in a multi-stress accelerated degradation environment.
    Type: Application
    Filed: October 17, 2013
    Publication date: January 15, 2015
    Applicant: INSTITUTE OF SEMICONDUCTORS, CHINESE ACADEMY SCIENCE
    Inventors: Lixia ZHAO, Zichao ZHOU, Hua YANG, Junxi WANG, Jinmin LI
  • Publication number: 20140375322
    Abstract: A test system and a method for testing a backlight unit of an electronic device are provided. The test system includes a selection unit, a backlight control unit, a display control unit, a determination unit and a count unit. The selection unit selects one mode of a number of modes and issues a command. The backlight control unit controls the backlight unit to adjust a luminous intensity. The display control unit controls the display unit to display a selection dialog window showing a number of options corresponding to the number of modes, and the options are displayed in random order. When an option is chosen, the determination unit determines whether the actual change of the luminous intensity of the backlight unit matches the command. The count unit counts a first counting value and a second counting value and determines whether the backlight unit is qualified.
    Type: Application
    Filed: June 19, 2014
    Publication date: December 25, 2014
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: JIAN SUN, LAI-JUN LIU
  • Publication number: 20140375323
    Abstract: A nest (1) comprising, a fix part (3), and a movable part (5), wherein the fix (part 3) and movable part (5) are configured to cooperate so as to define a (pocket 7) which can receive at least a part of an electrical component (25), wherein the movable part (5) is moveable between a first position and a second position, wherein in the first position the pocket (7) is open so that at least part of the electrical component can be moved into the pocket (7), and in the second position the pocket (7) is closed so that the at least part of the electrical component (25) positioned in the pocket is secured within the pocket, wherein the nest (1) further comprises a biasing means (9) which is arranged to bias the movable part (5) towards its second position. There is further provided a nest assembly, a component handling assembly, and a table comprising said nest.
    Type: Application
    Filed: December 5, 2012
    Publication date: December 25, 2014
    Inventors: Sylvain Vienot, Phillipe Viverge, Massimo Scarpella, Philippe Roy
  • Publication number: 20140375701
    Abstract: Methods and systems to provide baseline measurements for aging compensation for a display device are disclosed. An example display system has a plurality of active pixels and a reference pixel. Common input signals are provided to the reference pixel and the plurality of active pixels. The outputs of the reference pixel is measured and compared to the output of the active pixels to determine aging effects. The display system may also be tested applying a first known reference current to a current comparator with a second variable reference current and the output of a device under test such as one of the pixels. The variable reference current is adjusted until the second current and the output of the device under test is equivalent of the first current. The resulting current of the device under test is stored in a look up table for a baseline for aging measurements during the display system operation.
    Type: Application
    Filed: September 5, 2014
    Publication date: December 25, 2014
    Inventors: Gholamreza Chaji, Joseph Marcel Dionne, Yaser Azizi, Javid Jaffari, Abbas Hormati, Tong Liu, Stefan Alexander
  • Publication number: 20140368204
    Abstract: Techniques are disclosed for assessing the conditions of LEDs and power supplies of solid state lighting systems. The techniques can be used, for example, to measure the capacitance of an output capacitor C in a switch-mode power supply (SMPS), and to measure the condition of the LEDs being driven by that power supply. In some cases, this assessment can be implemented in a lighting controller that controls the lighting system, which may be configured to simultaneously determine C and the conditions of LEDs. In one example case, the techniques can be implemented, for instance, in a micro-controller operating the lighting system. A lighting system implementing the techniques can be periodically assessed so as to provide real-time diagnostic capability. Numerous example embodiments of SMPS LED lighting systems will be apparent in light of this disclosure.
    Type: Application
    Filed: January 21, 2013
    Publication date: December 18, 2014
    Applicant: OSRAM SYLVANIA INC.
    Inventors: Bernhard Siessegger, Marijan Kostrun