US Patent 11398531 Plurality of light conversion layers between first and second substrates

Provided is a display device including a first base substrate, a plurality of pixels disposed on the first base substrate and each of which including a pixel area and a non-pixel area around the pixel area, a second base substrate facing the first base substrate with the pixels therebetween, and a plurality of light conversion layers disposed under the second base substrate and overlapping the pixel areas of the pixels, wherein the second base substrate includes a first part overlapping the non-pixel area, and a second part around the first part, wherein a refractive index of the first part is different from a refractive index of the second part.