Light-emitting device having a patterned surface

摘要

The disclosure provides a light-emitting device. The light-emitting device comprises: a substrate having a first patterned unit; and a light-emitting stack on the substrate and having an active layer with a first surface; wherein the first patterned unit, protruding in a direction from the substrate to the light-emitting stack, has side surfaces abutting with each other and substantially non-parallel to the first surface in cross-sectional view, and has a non-polygon shape in top view.

主权项

1. A light-emitting device comprising:
a substrate having a top surface and a first patterned unit bulged on the top surface; and a light-emitting stack formed on the substrate and having an active layer with a first surface substantially parallel to the top surface; wherein a base of the first patterned unit has a non-polygon shape in a top view, and in a cross-sectional view the first patterned unit has a vertex, a first inclined line segment, and a second inclined line segment, and the first inclined line segment and the second inclined line segment connect at the vertex.