BACKLIGHT DRIVING CIRCUIT, LCD DEVICE, AND METHOD FOR DRIVING BACKLIGHT DRIVING CIRCUIT

摘要

A backlight driving circuit includes a power module and a constant current driver chip. The power module includes a first controllable switch. An adjustable load is connected between the first controllable switch and a round terminal of the backlight driving circuit, and the adjustable load includes a switching module controlling a resistance value of the adjustable load, a switching mode signal of the backlight driving circuit is sent to a control end of the switching module. A first end of the adjustable load that is connected to the first controllable switch is coupled to an over current protection (O(P) port of the constant current driver chip,

主权项

1. A backlight driving, circuit, comprising:
a power module; and a constant current driver chip; wherein the power module comprises a first controllable switch; an adjustable load is connected between the first controllable switch and a ground terminal of the backlight driving circuit, and the adjustable load comprises a switching module controlling a resistance value of the adjustable load, a switching mode signal of the backlight driving circuit is sent to a control end of the switching module; wherein a first end of the adjustable load that is connected to the first controllable switch is coupled to an over current protection (OCP) port of the constant current driver chip.