An active switch array substrate comprises: a first substrate; a first insulation layer disposed on the first substrate; a plurality of active switches disposed on the first insulation layer; a first planarization layer disposed on the first insulation layer and covering the active switches; a color filter layer disposed on the first planarization layer, the color filter layer including a plurality of first photoresist layers, second photoresist layers and third photoresist layers parallel to each other; a plurality of dummy bumps, wherein a material of the dummy bumps is the same as a material of the third photoresist layers, and the dummy bumps are disposed above the first photoresist layers and the third photoresist layers; and a pixel electrode layer disposed on the color filter layer and covering the dummy bumps.