CPC H10K 50/13 (2023.02) [H10K 30/35 (2023.02); H10K 50/11 (2023.02); H10K 50/856 (2023.02); H10K 50/858 (2023.02); H10K 71/00 (2023.02); H10K 71/15 (2023.02); H10K 71/311 (2023.02)] | 16 Claims |
1. A light-emitting diode display, comprising:
a substrate having a driving circuitry; and
a plurality of light emitting diode structures disposed on the substrate, each light-emitting diode structure including
a light emitting diode with a light emission zone having a planar portion, and
a pigmentless light extraction layer comprising a UV-cured ink disposed over the light-emitting diode, the light extraction layer having a gradient in index of refraction along an axis normal to the planar portion, wherein the index of refraction of the light extraction layer decreases with distance from the planar portion.
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