LIGHT-EMITTING DEVICE HAVING AIR GAP LAYER AND MANUFACTURING METHOD THEREOF

摘要

The present invention provides a light-emitting device including an air gap layer. The light-emitting device includes: a substrate, a semiconductor layer formed on the substrate, and the air gap layer formed in the semiconductor layer. The air gap layer can be formed in multi-layers. In addition, the invention provides a method for manufacturing the light-emitting device. Therefore, the invention is able to form a certain-shaped air gap through wet-etching. The air gap can improve light extraction efficiency by scattering the light progressing toward a sapphire plane among the lights generated in the semiconductor layer, wherein the light progression results from total internal reflection.