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

摘要

An LED backlight driving circuit (1) comprises a monitoring module (30), a first lamp group (10), a first boost module (11) for driving the first lamp group (10), a second lamp group (20), and a second boost module (21) for driving the second lamp group (20); the first boost module (11) comprises a first detection unit (12) for detecting the current output by the first boost module (11); the second boost module (21) comprises a second detection unit (22) for detecting the current output by the second boost module (21); and the monitoring module (30) comprises a current comparison unit (31) coupled with the first detection unit (12) and the second detection unit (22), and an execution unit (32) coupled with the current comparison unit (31) and used for controlling the operating states of the first boost module (11) and the second boost module (21).