This invention describes new LED structures that provide increased light extraction efficiency. The new LED structures include arrays of electrically interconnected micro-LEDs that have and active layer sandwiched between two oppositely doped layer. The micro-LEDs are formed on a first spreader layer...http://www.google.com.au/patents/US6410942?utm_source=gb-gplus-sharePatent US6410942 - Enhanced light extraction through the use of micro-LED arrays
