LED Electrode Sidewall Protrusion for Higher Light Output

The electrode is divided into multiple segments including a pad region, an extending region, and a protrusion region. This segmentation allows each part to serve specific functions: the pad provides electrical connection, the extending region increases conductive path length to reduce resistance and forward voltage, and the protrusion enhances light extraction efficiency by creating additional light-emitting surfaces.

The electrode structure implements local quality variations where different regions have different geometries and functions. The protrusion region has increased surface area for light emission, the extending region has optimized thickness for electrical conductivity, and the pad region has larger area for mechanical and electrical connection to the chip.

The electrode structure is designed with pre-formed protrusions and extending regions that are created during the electrode fabrication process itself, rather than requiring subsequent mechanical processing. The electrode pattern is directly formed with the desired three-dimensional geometry through deposition and lithography steps, integrating structural reinforcement into the manufacturing flow.

The electrode structure incorporates nested functional regions where the protrusion contains the extending region, which in turn contains the pad region. This nested configuration allows multiple functions to be integrated within a compact footprint, providing both structural integrity and electrical functionality without requiring separate components or assembly steps.