LED device having improved light output

摘要

A light-emitting optical cavity light-emitting diode device, comprising: a) a substrate; b) a reflective electrode formed over the substrate; c) an unpatterned light-emitting layer formed over the reflective electrode; d) a transparent electrode formed over the unpatterned light-emitting layer; e) one or more different optical spacers, defining at least two different optical path lengths, are formed in different locations over the substrate, between the reflective electrode and the transparent electrode; and f) a low-index layer formed over the transparent electrode.