A colored resin composition includes a colorant, an alkali-soluble resin, a polymerizable unsaturated compound, a photopolymerization initiator and a solvent, the alkali-soluble resin includes a photocurable resin, the weight average molecular weight (Mw) of the photocurable resin is less than 20000, and the potassium hydroxide (KOH) titration acid value is less than 100 mg/g. The display device applying the colored resin composition disclosed by the invention can avoid the exposure defect generated by the pixels of the display device due to local falling of the photoresist, and can also greatly improve the problem that the number of the photoresist defects is misjudged to be too high by a detector due to uneven bright and dark lines generated by the defective photoresist.
Colored resin composition, and photoresist structure, color filter and display device using same