A display panel includes a first light source, a second light source having a color different from a color of the first light source, a light guide plate converting a point light source generated by the first light source and the second light source into a surface light source, a diffuser plate positioned on an upper portion of the light guide plate and diffusing the surface light source emitted by the light guide plate, and a frame supporting the light guide plate and the diffuser plate and including a protrusion protruded between the diffuser plate and the light guide plate.