LED BACKLIGHT DRIVE CIRCUIT, LIQUID CRYSTAL DISPLAY DEVICE AND DRIVE METHOD FOR LED BACKLIGHT DRIVE CIRCUIT

摘要

Provided are an LED backlight drive circuit, a liquid crystal display device and a drive circuit. The LED backlight drive circuit comprises a constant current driver chip (20), the number of channels of which is even, and LED light bars (10) the number of which is odd. The channels comprise working channels (21) coupled with the LED light bars, and suspension channels (22) which are not connected to the LED light bars, wherein the suspension channels (22) are connected with a reference signal (30) the voltage of which is higher than an internal comparison voltage of the constant current driver chip (20).