Driving device and driving method for backlight module

A driving method for a driving device to drive a backlight module to provide backlight, wherein the backlight module is divided into a plurality of backlight areas, the driving device comprises a first LED driver, a first current-to-voltage converter, a first switch, and a second LED driver, the first current-to-voltage converter is configured to generate a first control voltage corresponding to a control current of a first driving channel of the first LED driver, a control terminal of the first switch receives the first control voltage, a first terminal of the first switch is configured to be coupled to a voltage source, a second terminal of the first switch is configured to be coupled to a first terminal of a first light-emitting element of the backlight module, and a second driving channel of the second LED driver is configured to be coupled to a second terminal of the first light-emitting element of the backlight module, the driving method comprising:

• during a period of generating the first control voltage, lighting a first backlight area of the plurality of backlight areas, and receiving, by the second LED driver, driving data for driving a second backlight area of the plurality of backlight areas.