Patent ID: 7884796
Filing Date: 2011-02-08
Classification: H05B,Y02B

Abstract:
1. A lamp driving structure for backlight module, comprising: a backlight module for a liquid crystal display, said backlight module being implemented for disposing a first circuit board, a second circuit board and a transmission line thereon; said first circuit board comprising a square wave controller, a first square wave switch, a plurality of driving transformers and a plurality of connectors; when a DC power is supplied to said square wave controller and said first square wave switch, said first square wave switch receives a control signal from said square wave controller and converts said DC power into an AC power and then outputs said AC power to primary sides of said plurality of driving transformers, and then secondary sides of said plurality of driving transformers drives a plurality of lamps through said plurality of connectors based on said AC power; said second circuit board comprising a second square wave switch, a mutually coupled transformer and a plurality of connectors; when the DC power is supplied to said second square wave switch, said second square wave switch receives said control signal from said square wave controller of said first circuit board through a transmission line and converts said DC power into said AC power for outputting to a primary side of said mutually coupled transformer, and then a secondary side of said mutually coupled transformer drives said plurality of lamps through said plurality of connectors based on said AC power; and said transmission line being disposed between said first circuit board and said second circuit board and used for transmitting said control signal of said square wave controller.