A display apparatus comprising: a display (910, 1340) configured to display an image, the display comprising: a liquid crystal panel; and a light source configured to emit light toward the liquid crystal panel; a first polarization layer disposed on a first surface of the liquid crystal panel and configured to transmit a first polarized component of the light emitted from the light source; a second polarization layer disposed on a second surface of the liquid crystal panel opposed to the first surface and configured to transmit a second polarized component of light emitted from the liquid crystal panel; a color conversion layer (650, 750, 850) disposed on a surface of the second polarization layer from which the second polarized component exits, the color conversion layer comprising a quantum dot layer configured to convert light exiting the second polarization layer into light having preset colors; and a reflective polarizer layer interposed in between the second polarization layer and the color conversion layer, the reflective polarizer layer being configured to reflect a preset polarized component of light, traveling from the color conversion layer toward the second polarization layer, toward the color conversion layer; the reflective polarizer layer comprises a diffusion layer formed on a surface thereof facing the second polarization layer, and the diffusion layer diffuses light passed through the reflective polarizer layer and traveling toward the second polarization layer. a display (910, 1340) configured to display an image, the display comprising: a liquid crystal panel; and a light source configured to emit light toward the liquid crystal panel; a first polarization layer disposed on a first surface of the liquid crystal panel and configured to transmit a first polarized component of the light emitted from the light source; a second polarization layer disposed on a second surface of the liquid crystal panel opposed to the first surface and configured to transmit a second polarized component of light emitted from the liquid crystal panel; a color conversion layer (650, 750, 850) disposed on a surface of the second polarization layer from which the second polarized component exits, the color conversion layer comprising a quantum dot layer configured to convert light exiting the second polarization layer into light having preset colors; and a reflective polarizer layer interposed in between the second polarization layer and the color conversion layer, the reflective polarizer layer being configured to reflect a preset polarized component of light, traveling from the color conversion layer toward the second polarization layer, toward the color conversion layer; the reflective polarizer layer comprises a diffusion layer formed on a surface thereof facing the second polarization layer, and a liquid crystal panel; and a light source configured to emit light toward the liquid crystal panel; a first polarization layer disposed on a first surface of the liquid crystal panel and configured to transmit a first polarized component of the light emitted from the light source; a second polarization layer disposed on a second surface of the liquid crystal panel opposed to the first surface and configured to transmit a second polarized component of light emitted from the liquid crystal panel; a color conversion layer (650, 750, 850) disposed on a surface of the second polarization layer from which the second polarized component exits, the color conversion layer comprising a quantum dot layer configured to convert light exiting the second polarization layer into light having preset colors; and a reflective polarizer layer interposed in between the second polarization layer and the color conversion layer, the reflective polarizer layer being configured to reflect a preset polarized component of light, traveling from the color conversion layer toward the second polarization layer, toward the color conversion layer; the reflective polarizer layer comprises a diffusion layer formed on a surface thereof facing the second polarization layer, and the diffusion layer diffuses light passed through the reflective polarizer layer and traveling toward the second polarization layer.