LED Controller addition LED driver plurality of (5a) ~ to (5i), generates control information group is arranged lighting control information to LED driver were selected (61), a backlight unit of the present invention, LED driver I provided, and a line cascade to cascade each of the. LED controller (61), did on the enable state LED driver were selected (5), is sent to the cascade line control information group, LED driver is enabled state (5), itself from the control information group While performing the (acquisition operation) Operation of acquiring the information for the lighting control, LED drivers are not enabled (5) does not perform the acquisition operation. In accordance with the present invention, it is possible to suppress the execution of unnecessary operations of the backlight unit. The present invention can be used in a liquid crystal display device is used as a light source of backlight LED.
展开▼
