The invention provides a display device and belongs to the technical field of display. The display device solves the problems that conventional display devices cause injury to the eyes of people because of short wave blue light existing in light emitted by LEDs. The display device comprises a display panel and an optical component. The optical component comprises first material layers and second material layers arranged alternately, wherein the refractive index of the first material layers is greater than that of the second material layers. The optical component is used for reducing the transmittance of short wave blue light in light emitted to the display panel.