Provided is a display device for preventing leakage of blue light. The display device includes: a display panel; a light source for providing light to the display panel; a bottom chassis on which the light source is disposed; a mold frame coupled to the bottom chassis and including a protrusion; and a light conversion sheet disposed between the display panel and the bottom chassis. The light conversion sheet has a coupling hole into which the protrusion is inserted, and which is formed at an edge portion of the light conversion sheet.
