[D-4-4] Optimized Micro-Cavity and Photonic Crystal in GaN-based Thin-Film Light-Emitting Diodes for Highly Directional Beam Profiles C. F. Lai1, C. H. Chao1, W. Y. Yeh1 (1.Indus. Tech. Res. Inst. , Taiwan) https://doi.org/10.7567/SSDM.2010.D-4-4