A solid-state element has: a semiconductor layer formed on a substrate, the semiconductor layer having a first layer that corresponds to an emission area of the solid-state element to and a second layer through which current is supplied to the first layer; a light discharge surface through which light...http://www.google.se/patents/US7429750?utm_source=gb-gplus-sharePatent US7429750 - Solid-state element and solid-state element device
