Patent ID: 8378962

Claim:
An LCD backlight driving device with an isolating transformer, comprising: a DC power supply for outputting a DC signal to a square wave generator; said square wave generator for converting said DC signal into an AC signal and outputting said AC signal to a primary side of said isolating transformer; a square wave controller for outputting a control signal to said square wave generator; said isolating transformer for receiving said AC signal from said square wave generator, and then outputting said AC signal to a primary side of a driver transformer by a secondary side of said isolating transformer; and said driver transformer for boosting said AC signal inputted by said isolating transformer, and then outputting a boosted AC signal to a cold cathode fluorescent lamp by a secondary side of said driver transformer, wherein the primary side of said isolating transformer has an input voltage of 400V, and said isolating transformer has a safety spacing of 6 mm between the primary side and the secondary side.