Abstract
A thin-film, white-light-emitting diode device includes a reflective, conductive thin-film structure and a semi-transparent, conductive thin-film structure. One or more thin-film layers are formed between the reflective and semi-transparent conductive thin-film structures to form two or more commonly-controlled microcavity structures. The thin-film layers emit white light in response to current provided by the conductive thin-film structure. Each of the two or more commonly-controlled microcavity structures has a different resonant frequency within one or more optical cavities and emits light with a smaller spectral range than the spectral range of the white-light-emitting thin-film layer(s). A combination of light emitted from the two or more commonly-controlled microcavity structures is white.
Document Type
Patent
Status
Issued
Issue Date
5-24-2011
Patent Number
US 7948172 [ 7,948,172 ] ; US7948172B2
CPC Classification
H 10 K 50/125
Application number
11/863412
Assignees
Global OLED Technology LLC
Filing Date
9-28-2007
Recommended Citation
Cok, R. S., & Miller, M. E. (2011). LED Device Having Improved Light Output (United States Patent No. US7948172B2). https://scholar.afit.edu/patents/86