Backlight control method and backlight control circuit

A backlight control circuit for driving a surface light-emitting device, the surface light-emitting device comprising a plurality of first groups and a plurality of second groups, each of the first groups and the second groups comprising at least one backlight zone, backlight zones arranged along a first direction being defined as the first group, backlight zones arranged along a second direction being defined as the second group, and the first direction being not parallel to the second direction, the backlight control circuit comprising:

• a driving circuit configured to generate a plurality of driving currents to drive the surface light-emitting device such that a plurality of backlight zones generates a plurality of brightness values;
• a measurement circuit configured to measure the plurality of brightness values of the plurality of backlight zones;
• and
• a processing circuit configured to calculate a plurality of uniformities of the plurality of backlight zones according to the plurality of brightness values, set a plurality of target uniformities, and generate a plurality of adjustment values according to the plurality of uniformities, the plurality of target uniformities and a plurality of adjustment coefficients corresponding to the plurality of backlight zones, such that the driving circuit is configured to generate a plurality of adjusted driving currents to drive the plurality of backlight zones according to the plurality of adjustment values and the plurality of driving currents.