Patents Assigned to Light Technologies, Inc.
  • PROTECTIVE COVER
    Publication number: 20150185408
    Abstract: A protective cover is adapted to cover a display region of a mobile electronic device. The protective cover includes a fixed side, a movable side, and a flexible portion connecting the fixed side and the movable side. The fixed side is adapted to detachably fix the mobile electronic device. The movable side is adapted to cover the display region and has a transparent plate and a light source device. The transparent plate has a first surface, a second surface opposite to the first surface, and at least one light incident surface capable of connecting the first and second surfaces. The light source device is disposed adjacent to the light incident surface. Light generated from the light source device enters the transparent plate and then reaches the display region through the first surface of the transparent plate. The display region receives the light and displays an image through the transparent plate.
    Type: Application
    Filed: November 28, 2014
    Publication date: July 2, 2015
    Applicant: Young Lighting Technology Inc.
    Inventors: Sung-Chun Hsu, Chun-Chung Hsiao
  • LED driver and protection circuit for output short conditions
    Patent number: 9066406
    Abstract: An LED driver circuit is provided with protection against short circuits between output terminals. Two switches are coupled in series with the LED load. A first capacitor is coupled to gate terminals for the first and second switches and defines a first gate charge time. A first failure detection circuit includes a third switch coupled across the first capacitor, a second capacitor defining a second gate charge time for the third switch, the second gate charge time being less than the first, and a zener diode having a threshold voltage less than a maximum output voltage during normal operation. The failure detection circuit disables the third switch during normal operation, and during short conditions enables the third switch to short the gates of the first and second switches. A second failure detection circuit is identical to the first, and coupled in parallel to protect against circuit failure.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: June 23, 2015
    Assignee: Universal Lighting Technologies, Inc.
    Inventor: Wei Xiong
  • Circuit and method for monitoring and reporting the remaining useful life of an LED module
    Patent number: 9055651
    Abstract: A light source includes an operating time accumulator (i.e., counter or timer). The light source is operable to be powered by a driver circuit. The light source may be included in a light fixture or independently housed. The light source includes a controller integrally connected with a light emitting diode (LED) of the light source. Whenever the LED is receiving power from the driver circuit, the controller receives power from the driver circuit and accumulates an operating time in a nonvolatile memory of the controller. The nonvolatile memory includes blocks of bits arranged in a hierarchy. All of the bits of any block are in the same level of the hierarchy.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: June 9, 2015
    Assignee: Universal Lighting Technologies, Inc.
    Inventors: Christopher Radzinski, John J. Dernovsek
  • Illumination system and operation method thereof
    Patent number: 9055628
    Abstract: An illumination system and an operation method thereof are provided. The illumination system includes a first controller and a first lighting device. The first controller is capable of emitting a wireless control signal. The first lighting device is capable of receiving the wireless control signal, adjusting a light emitting state thereof according to the wireless control signal, and accordingly emitting a wireless feedback signal. When the first controller does not receive the wireless feedback signal within a predetermined time or receives a wrong wireless feedback signal after the first controller emitted the wireless control signal to the first lighting device, the first controller emits the wireless control signal again.
    Type: Grant
    Filed: January 8, 2012
    Date of Patent: June 9, 2015
    Assignee: Young Lighting Technology Inc.
    Inventors: Wen-Chi Wu, Chih-Hua Lin
  • Display and projection device
    Patent number: 9052087
    Abstract: A display and projection device includes a first shell, a display module, a projection light valve, and a projection lens. The first shell has a display surface and a non-display surface. The display module is disposed within the first shell. The display surface of the first shell exposes the display module. The projection light valve is disposed within the first shell and capable of emitting an image light beam, and the non-display surface of the first shell exposes the projection light valve. The projection lens is disposed outside of the first shell and is located at a transmission path of the image light beam. The projection lens is detachably connected with the non-display surface of the first shell. Moreover, a projection device including a Fresnel lens is also provided.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: June 9, 2015
    Assignee: Young Lighting Technology Inc.
    Inventors: Sze-Ke Wang, Chien-Chung Liao, Chin-Ku Liu
  • FLAT PANEL DISPLAY
    Publication number: 20150131026
    Abstract: A flat panel display includes a plastic rear cover, a supporting frame, a liquid crystal display (LCD) module, a light bar and a front cover. The plastic rear cover constructs a rear half portion of an appearance of the flat panel display. The supporting frame is connected to the plastic rear cover. The LCD module is connected to the supporting frame. The light bar is disposed aside the LCD module. The front cover is connected to the plastic rear cover, constructs a front half portion of the appearance of the flat panel display, and has an opening to expose the LCD module.
    Type: Application
    Filed: October 15, 2014
    Publication date: May 14, 2015
    Applicant: Young Lighting Technology Inc.
    Inventors: Ching-Hung Chen, Wen-Pin Yang, Chien-Tsai Chueh, Jun-Ho Chen, Ching-Tai Tseng
  • Touch device
    Patent number: 9013436
    Abstract: A touch device includes a circuit board, a substrate and a touch-sensing layer. The touch-sensing layer including patterned electrode sets is disposed on the substrate. Each patterned electrode set includes a driving electrode connected to the circuit board and sensing electrodes having wiring lines connected to the circuit board. The wiring lines of each patterned electrode set include first and second groups. The length for one of the wiring lines in the first group is greater than the length for one of the wiring lines in the second group. Diameters of the wiring lines in the first group are greater than diameters of the wiring lines in the second group. The diameter of the longer wiring line is greater than the diameter of the shorter wiring line, in the first group. The diameters in the second group are identical. The total widths of the first and second groups are equal.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: April 21, 2015
    Assignee: Young Lighting Technology Inc.
    Inventors: Yung-Lung Liu, Hsien-Ming Chen, Chwen-Tay Hwang
  • Illumination apparatus
    Patent number: 9004737
    Abstract: An illumination apparatus including an illumination shell, a circuit and a light source is provided. The illumination shell is formed by a light guide plate. The circuit has a plurality of circuit contacts integrated with the illumination shell. The light source is disposed on the illumination shell and electrically contacted to the plurality of circuit contacts.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: April 14, 2015
    Assignee: Global Lighting Technologies Inc.
    Inventors: Chung-Lin Tsai, Guo-Chen Lee
  • Lamp and illumination system and driving method thereof
    Patent number: 8988001
    Abstract: A lamp and an illumination system and a driving method thereof are provided. The lamp includes a lighting unit, a conversion unit, and a driver. The conversion unit is capable of receiving an input pulse width modulation (PWM) signal and converting the input PWM signal into an output PWM signal, wherein a frequency of the input PWM signal and a frequency of the output PWM signal are different. The driver is coupled between the lighting unit and the conversion unit. The driver is capable of receiving the output PWM signal and generating a driving signal to drive the lighting unit according to the output PWM signal.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: March 24, 2015
    Assignee: Young Lighting Technology Inc.
    Inventors: Chih-Hua Lin, Yu-Chin Lan
  • Electronic apparatus having a display unit
    Patent number: 8960982
    Abstract: An electronic apparatus including a back cover, a frame body, a transparent plate, and a display unit is provided. The frame body is disposed on the back cover and has a first supporting surface and a second supporting surface. The transparent plate is supported on the first supporting surface. The display unit is supported on the second supporting surface and adhered to the transparent plate, and the display unit is held between the second supporting surface and the transparent plate.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: February 24, 2015
    Assignee: Young Lighting Technology Inc.
    Inventors: Chun-Chi Hsu, Chun-Chung Hsiao
  • INTERMETALLIC COMPOUNDS FOR RELEASING MERCURY
    Publication number: 20150041713
    Abstract: Materials, compounds, systems, and methods of dosing fluorescent lamps to reduce run-up time by improving mercury release rates. A pellet comprises a core and a coating on at least a portion of the surface of the core, the coating being formed from a powder of one or more intermetallic compounds comprising mercury. A method comprises providing a core and forming a coating on at least a portion of the surface of the core with a material comprising one or more intermetallic compounds comprising mercury and a metal selected from the group consisting of silver, copper, tin, zinc, bismuth, gold, platinum, palladium, nickel, manganese, and titanium.
    Type: Application
    Filed: August 6, 2014
    Publication date: February 12, 2015
    Applicant: Advanced Lighting Technologies, Inc.
    Inventors: Steven C. Hansen, Tryggvi I. Emilsson, Daniel J. Gordon
  • LUMINOUS KEYBOARD
    Publication number: 20150036314
    Abstract: A luminous keyboard includes a light guide layer, a light source, a reflecting layer, a circuit layer, a key fixing plate, mechanical keys, and microstructures. The light guide layer has a first surface, a second surface, and a light incident surface. The light source generates a light beam to the light guide layer through the light incident surface. The reflecting layer is disposed beside the first surface of the light guide layer. The circuit layer formed on the second surface of the light guide layer has multiple switches. The key fixing plate is fixed to the second surface of the light guide layer. The mechanical keys are connected to the key fixing plate, corresponding to the switches, and are pressed to trigger the corresponding switches. The microstructures disposed on the light guide layer surround the switches, and guide the light beam from the light guide layer to the mechanical keys.
    Type: Application
    Filed: July 7, 2014
    Publication date: February 5, 2015
    Applicant: Young Lighting Technology Inc.
    Inventors: Ming-Tsang Cheng, Kuo- Hsin Chen, Chih-Jen Tsang
  • End of life control for parallel lamp ballast
    Patent number: 8947020
    Abstract: A light fixture includes a ballast and a plurality of lamps connected to the ballast in parallel. The ballast provides an output signal to the plurality of lamps as a function of a 1st steady state condition. When the ballast senses an end-of-life condition for a lamp of the plurality of lamps, the ballast increases the frequency of the output signal provided to the plurality of lamps until the lamp ceases to conduct current. When the lamp ceases to conduct current, the ballast decreases the frequency of the output signal to a frequency determined as a function of a 2nd steady state condition different from the 1st steady state condition. A total current of the 2nd steady state condition is proportional to a total current of the 1st steady state condition as a function of the number of lamps exhibiting an end-of-life condition.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: February 3, 2015
    Assignee: Universal Lighting Technologies, Inc.
    Inventor: Wei Xiong
  • Indirect line voltage conduction angle sensing for a chopper dimmed ballast
    Patent number: 8947015
    Abstract: A ballast includes a rectifier, DC to DC converter, a dimming sensor, and a light source driver circuit. The rectifier provides rectified power from an AC power source modified by a chopper dimmer. The converter includes a boost inductor having a primary winding and a detection winding. The converter receives the rectified power from the rectifier and provides a DC power rail. The dimming sensor monitors a voltage of the detection winding of the boost inductor and provides a dimming signal as a function of the monitored voltage. The light source driver circuit receives the dimming signal, receives the DC power rail, and provides power from the DC power rail to the light source as a function of the dimming signal. An amount of power provided to the light source by the light source driver circuit corresponds to a dimming level indicated by the dimming signal.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: February 3, 2015
    Assignee: Universal Lighting Technologies, Inc.
    Inventor: Wei Xiong
  • LED driver circuit with unified controller
    Patent number: 8928236
    Abstract: A constant current LED driver circuit includes a unified controller operable to control start up peripheral circuits and control power output of the driver circuit. The unified controller initializes, starts driver circuit components in a predetermined order, and controls operation to prevent runaway operation, failure to start, and nuisance shut downs. Additionally, due to centralized operational condition monitoring, the controller can detect conditions that would cause unnecessary shut downs and prevent such nuisance shutdowns. The unified controller enables fast, finite control over switches of a DC-to-DC converter of the driver circuit to improve output current and voltage control, improving closed loop responsiveness and operation of the DC-to-DC converter.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: January 6, 2015
    Assignee: Universal Lighting Technologies, Inc.
    Inventors: Stephen D. Mays, II, John J. Dernovsek
  • Series resonant inverter with capacitive power compensation for multiple lamp parallel operation
    Patent number: 8922131
    Abstract: A light fixture includes a housing, a plurality of parallel lamps, and a ballast. The ballast provides power to each lamp of the plurality of parallel lamps. A series resonant inverter in the ballast provides AC power to an output of the series resonant inverter from a DC power source having a power rail and a ground. The series resonant inverter includes a resonant inductor, a first clamping diode, and a second clamping diode. The resonant inductor has a first portion and a second portion and a connection point between the first portion and the second portion. The first clamping diode is connected between the connection point and the power rail. The second clamping diode is connected between the connection point and the ground. The first and second clamping diodes ensure soft switching of a half-bridge inverter switch pair of the series resonant inverter.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: December 30, 2014
    Assignee: Universal Lighting Technologies, Inc.
    Inventor: Wei Xiong
  • LIGHT SOURCE MODULE
    Publication number: 20140376256
    Abstract: A light source module includes a light guide plate, at least one light emitting element, a circuit board, and a heat conductive structure. The light guide plate has a light incident surface and a bottom surface adjacent to each other. The light emitting element is disposed beside the light incident surface. The circuit board has a bottom and a sidewall. The bottom extends toward the light guide plate from an end of the sidewall. The sidewall has a first surface facing the light incident surface, and the bottom has a second surface facing the bottom surface. The light emitting element is disposed on the first surface. The heat conductive structure is disposed on the circuit board contacted the first surface and the second surface of the circuit board, for transmitting heat generated by the light emitting element and the circuit board.
    Type: Application
    Filed: June 10, 2014
    Publication date: December 25, 2014
    Applicant: Young Lighting Technology Inc.
    Inventors: YI- WEN LIN, JUNG-HAO CHEN, DER-WOEI HSAIO
  • LIGHT SOURCE MODULE, DISPLAY APPARATUS AND METHOD FOR DRIVING LIGHT SORUCE MODULE
    Publication number: 20140375707
    Abstract: A light source module adapted to provide a first illumination beam to a display apparatus is provided. The display apparatus includes a display panel for displaying a 2D/3D image. The light source module includes a first wedge-shaped light guide plate, a first light emitting device, a second light emitting device, and a light source driving module. The first wedge-shaped light guide plate has a first and second light incident surfaces and an optical grating pattern. The first light emitting device and the second light emitting device are respectively disposed beside the first light incident surface and the second light incident surface. In a 2D/3D image display mode, the light source driving module controls to turn on the first/second light emitting device for providing the first illumination beam to the first wedge-shaped light guide plate. A method for driving the display apparatus is also provided.
    Type: Application
    Filed: June 9, 2014
    Publication date: December 25, 2014
    Applicant: Young Lighting Technology Inc.
    Inventors: Jhong-Hao Wu, Chin-Ku Liu
  • BACK LIGHT MODULE
    Publication number: 20140376261
    Abstract: A back light module includes a light guide plate, at least one first light source, at least one second light source and at least one first reflection element. The light guide plate includes a first light incident surface, a second light incident surface opposite to the first light incident surface, a light emitting surface, and a bottom surface opposite to the light emitting surface. The first light source is disposed beside the first light incident surface and suitable to provide a first non-collimated light beam to the first light incident surface. The second light source is disposed beside the second light incident surface and suitable to provide a first collimated light beam to the second light incident surface. The first reflection element is disposed beside the first light incident surface to reflect the first collimated light beam emitted so as to make the first collimated light beam diverge.
    Type: Application
    Filed: June 16, 2014
    Publication date: December 25, 2014
    Applicant: Young Lighting Technology Inc.
    Inventors: MING-DAH LIU, CHIN-MING LIN, SZE-KE WANG
  • Light source module
    Patent number: 8915637
    Abstract: A light source module including a light guide plate, a plurality of light emitting devices, and a plurality of first reflective devices is provided. The light guide plate has a plurality of through holes and a light emitting surface. The through holes pass through the light emitting surface. Each of the through holes has a first side wall and a second side wall opposite the first side wall. At least one of the light emitting devices is disposed in each of the through holes. Each of the light emitting devices is capable emitting a light beam. The light beam enters the light guide plate from the first side wall of the through hole which the light emitting device is disposed in and leaves the light guide plate from the light emitting surface. The first reflective devices are disposed on the second side walls of the through holes.
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: December 23, 2014
    Assignee: Young Lighting Technology Inc.
    Inventors: Chiao-Chih Yang, Chao-Chun Cheng, Hsin-Hung Lee, Wei-Ching Wu, Yen-Hao Chen