LED BACKLIGHT DRIVER CIRCUIT, LIQUID CRYSTAL DISPLAY DEVICE, AND DRIVING METHOD

摘要

An LED backlight driver circuit, a liquid crystal display device comprising the backlight driver circuit, and an LED backlight driving method. The backlight driver circuit comprises at least two independently driven light bars (1) and a monitoring module. A constant current driver chip (2) is coupled at output ends of the light bars (1) and is controlled by the monitoring module. The monitoring module outputs delay time for driving each of two adjacent light bars (1) and a current duty cycle of each light bar (1) to the constant current driver chip (2). The constant current driver chip (2) drives the light bars (1) one by one in sequence according to the corresponding duty cycles and the delay time.