A light source panel according to an embodiment includes a plurality of light-emitting parts having a plurality of light-emitting substances to be divided into a predetermined number of partial areas. A light source driving part provides each of the light-emitting substances with a current. An adaptive dimming control part receives an image signal from an external device and sets the light-emitting parts into a first dimming block corresponding to a first color class of the first image signal or a second dimming block corresponding to a second color class of the first image signal to control the backlight assembly, in order to prevent color artifacts from being generated at a boundary area between the first dimming block and the second dimming block, the adaptive dimming control part controlling the backlight assembly, so that the first dimming block performs a second dimming operation.