A portable electronic apparatus comprises a substrate comprising a first surface and a second surface; a plurality of pixel electrodes arranged over the first surface of the substrate; a pixel-defining layer arranged over the first surface of the substrate such that at least a portion of each of the plurality of pixel electrodes is exposed; a plurality of protrusions formed over the pixel-defining layer; and an electronic component arranged over the second surface of the substrate and attached to the substrate, the electronic component having a polygonal shaped surface facing and substantially parallel to the second surface of the substrate. When viewed in a direction perpendicular to the second surface, imaginary straight lines that pass the plurality of protrusions are substantially parallel to at least one among sides of the polygonal shaped surface and do not pass the exposed portions of the plurality of pixel electrodes.