Patent application number | Description | Published |
20090190650 | DRIVING SIGNAL GENERATION CIRCUIT - A driving signal generation circuit including a transforming circuit and a phase split circuit is disclosed. The transforming circuit is utilized to generate a transformed signal by delaying a rising or falling edge of each pulse of a pulse-width-modulation signal. The phase split circuit generates first and second driving signals by respectively extracting each odd pulse and each even pulse of the transformed signal. Furthermore, disclosed is another driving signal generation circuit including a phase split circuit and a phase shift circuit. The phase split circuit generates first and second push-pull signals by respectively extracting each odd pulse and each even pulse of the pulse-width-modulation signal. The phase shift circuit generates a driving signal by delaying rising and falling edges of each pulse of the first or second push-pull signal. | 07-30-2009 |
20100072507 | Lead frame, and light emitting diode module having the same - A light emitting diode (LED) module includes a lead frame having a number (N) of conducting arms spaced apart from each other, where N≧3, and at least one LED die mounted on one of any two neighbor conducting arms. Any two neighbor conducting arms are electrically coupled each other. | 03-25-2010 |
20100072509 | Lead frame assembly, lead frame and insulating housing combination, and led module having the same - A unitary lead frame assembly having a plurality of lead frame sets each comprises a first lead frame unit. The first lead frame unit has a pair of first and second frame portions extending along a first direction and spaced apart from each other along a second direction different from the first direction. The lead frame set further comprises at least two second lead frame units disposed between the first and second frame portions and spaced apart from each other along the second direction. Each of the second lead frame units cooperates with the first lead frame unit to define at least one first die-bonding area therebetween. | 03-25-2010 |
20100123405 | FEEDBACK CIRCUIT FOR DC/AC INVERTER - A feedback circuit is utilized in a DC/AC inverter having a first power switch and a second power switch for driving a fluorescent lamp. The feedback circuit includes a protection circuit for disabling the first power switch and the second power switch when no fluorescent lamp is electrically connected, a first capacitor having a first terminal electrically connected to an output of the DC/AC inverter, a second capacitor having a first terminal electrically connected to a ground, and a second terminal electrically connected to a second terminal of the first capacitor, a diode having an anode electrically connected to the second terminals of the first and second capacitors, and a cathode electrically connected to the protection circuit, and a first resistor having a first terminal electrically connected to the cathode of the diode, and a second terminal electrically connected to the ground. | 05-20-2010 |
20110156607 | DC/AC Inverter - A direct current to alternating current (DC/AC) inverter is for driving a fluorescent lamp through quasi sine wave generation. The DC/AC inverter includes a frequency generator for generating a reference signal and a modulation signal, a pulse width modulator coupled to the frequency generator for providing a pulse width modulation signal according to said modulation signal, a driver circuit coupled to the pulse width modulator for generating at least one driving signal according to the pulse width modulation signal and the reference signal, a half bridge power switch unit coupled to the driver circuit, and a resonant tank coupled to the fluorescent lamp for outputting a quasi sine wave to drive the fluorescent lamp. | 06-30-2011 |
20120119248 | LIGHTING DEVICE AND METHOD FOR MANUFACTURING THE SAME - A method for manufacturing a lighting device includes the steps of: preparing a substrate having at least one lighting chip, a frame for surrounding the lighting chip, and a cover body for covering one side of the frame; bonding the frame and the substrate so that the lighting chip is located within a region surrounded by the frame; and bonding the cover body and the frame so that the cover body and the frame cooperatively define a receptacle to cover the lighting chip. A bonding force between the cover body and the frame is configured to be smaller than a bonding force between the frame and the substrate so that when the cover body is separated from the frame, the bonding between the frame and the substrate is not destroyed. | 05-17-2012 |
20120146534 | DC/AC Inverter - A fluorescent lamp device includes a frequency generator for generating a pulse signal, a driver circuit coupled to said frequency generator for generating at least one driving signal according to said pulse signal, a half bridge power switch unit coupled to the driver circuit, a resonant tank coupled to the half bridge power switch unit, and a fluorescent lamp coupled to the resonant tank. | 06-14-2012 |
20130037845 | LEAD FRAME, AND LIGHT EMITTING DIODE MODULE HAVING THE SAME - A light emitting diode (LED) module includes a lead frame having a number (N) of conducting arms spaced apart from each other, where N≧3, and at least one LED die mounted on one of any two neighbor conducting arms. Any two neighbor conducting arms are electrically coupled each other. | 02-14-2013 |