Backlight control circuit

A backlight control circuit for driving a surface light-emitting device, 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 according to a plurality of target uniformities for the plurality of backlight zones, and each backlight zone comprising at least one light source for emitting light;
• and
• a light source module, wherein the light source module comprises a substrate and a plurality of light-emitting diodes disposed on the substrate, the light source module defines a plurality of light-emitting zones arranged below the plurality of backlight zones, and each light-emitting zone comprises at least one of the light-emitting diode;
• wherein the number of the plurality of light-emitting zones is greater than or equal to the number of the plurality of backlight zones;
• wherein the surface light emitting device is divided into at least a first backlight area and a second backlight area, the second backlight area is closer to an edge of the surface light emitting device than the first backlight area, a first driving current of the plurality of driving currents is utilized for driving the light source of the backlight zone of the first backlight area, a second driving current of the plurality of driving currents is utilized for driving the light source of the backlight zone of the second backlight area, and the second driving current is greater than the first driving current;
• wherein the surface light-emitting device further comprises an outer frame surrounding the plurality of backlight zones, and among the light-emitting zones arranged below the backlight zones on the same edge, the driving current utilized for driving at least one of the light-emitting diodes farther from the outer frame at one light-emitting zone is greater than the driving current utilized for driving at least one of the light-emitting diodes closer to the outer frame at another light-emitting zone.