Patent ID: 8164268
Filing Date: 2012-04-24
Classification: H05B,Y02B

Abstract:
1. A lighting device implemented through utilizing an insulating type piezoelectric transformer in driving light-emitting-diodes (LEDs), comprising: a light-emitting-diode (LED) module comprising a plurality of LEDs of a first polarity and a plurality of LEDs of a second polarity; and at least an insulating type piezoelectric transformer, connected to said LED module, and said insulating type piezoelectric transformer includes: a ceramic substrate, having an upper surface and a bottom surface, at least a first upper electrode and a first bottom electrode, located correspondingly to said upper surface and said bottom surface of said ceramic substrate respectively to serve as a primary side, and is used to receive a pulse voltage, and at least a second upper electrode and a second bottom electrode, located correspondingly to said upper surface and said bottom surface of said ceramic substrate respectively to serve as a secondary side, and an insulation region is disposed between said first upper electrode and said second upper electrode, and between said first bottom electrode and said second bottom electrode, said pulse voltage is converted into an AC voltage by said primary side and said secondary side in a piezoelectric voltage transformation way, said AC voltage is output from said secondary side in driving said LEDs of a first polarity and said LEDs of a second polarity into proceeding with lighting function.