Display apparatus comprising a quantum dot layer with red, blue and green quantum dots and light emitting diodes with a reflective layer

Abstract

A display apparatus includes a light source module including: a substrate, a plurality of light emitting diodes provided on the substrate and configured to emit blue light, a plurality of optical domes, each optical dome of the plurality of optical domes covering a corresponding light emitting diode of the plurality of light emitting diodes, and a plurality of reflective layers, each reflective layer of the plurality of reflective layers being provided in front of a corresponding light emitting diode of the plurality of light emitting diodes in a corresponding optical dome of the plurality of optical domes; a diffuser plate provided in front of the light source module and configured to uniformly diffuse irregular light emitted from the light source module; and a quantum dot sheet provided in front of the diffuser plate and configured to change a wavelength of light emitted from the light source module, wherein the quantum dot sheet includes: a red quantum dot configured to convert the blue light emitted from the light source module into red light; a green quantum dot configured to convert the blue light emitted from the light source module into green light; and a blue quantum dot configured to convert the blue light emitted from the light source module into blue light having a wavelength that is longer than a wavelength the blue light emitted by the light source module.