Light-emitting device having a patterned surface

US9257604B2 · kind B2 · utility

Assignee

• Epistar Corporation · TW

Inventors

• Chen Ou · Hsinchu, TW
• Chiu-Lin Yao · Hsinchu, TW

Key dates

• Filing date: Dec 18, 2013
• Grant date: Feb 9, 2016
• Expiry date: Dec 18, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/882

Abstract

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.