A backlight driving circuit and a method for driving the same, which are capable of preventing a flicker phenomenon and delay of response, are disclosed. The evolution of a bubble includes formation and growth at a nozzle disposed within the liquid through which a gas is flowed, or formation and growth as a result of cavitation in the liquid from the application of focused acoustic energy to a location within the liquid; detachment and resonance; and rise towards terminal velocity. The swing arm pivots upon the frame and angles downward behind the frame.