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Multi-layer printing of OLEDs as a tool for the creation of security features.

Authors
  • Fischer, Bert
  • Kreissl, Stefanie
  • Boeffel, Christine
  • Wedel, Armin
Type
Published Article
Journal
Optics Express
Publisher
The Optical Society
Publication Date
Mar 12, 2012
Volume
20 Suppl 2
Identifiers
DOI: 10.1364/OE.20.00A219
PMID: 22418671
Source
Medline
License
Unknown

Abstract

The combined deposition of structured and homogenous layers for the device setup of OLEDs results in a structured display visible with a gray scale impression. These permanently imprinted structures are only visible during the application of an electrical field and almost invisible in the off state. Most intriguing applications of such devices are security marks, electronic watermarks but also for advertising and design applications the creation of gray scale structures might have interesting applications.

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