CPC H01L 27/156 (2013.01) [H01L 33/38 (2013.01); H01L 33/50 (2013.01); H01L 33/62 (2013.01)] | 16 Claims |
1. A light emitting display apparatus, comprising:
a substrate including a plurality of pixels each including an emission area;
a light extraction pattern including a plurality of concave portions in the emission area; and
a light emitting portion over the light extraction pattern,
wherein at least one of the plurality of concave portions has a curvature of 0.217 μm−1 to 0.311 μm−1,
wherein the light extraction pattern further comprises a plurality of protruding portions, each of the plurality of protruding portions is on respective adjacent sides of each of the plurality of concave portions,
wherein the protruding portion comprises:
a plurality of peak portions respectively provided between three adjacent concave portions; and
a plurality of ridge portions connecting two adjacent peak portions and/or being provided between two adjacent concave portions, and
wherein a height of each of the peak portions from a center point of an adjacent concave portion is less than a curvature radius at said center point of said adjacent concave portion.
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