Flexible organic leds with parylene thin films for biological implants

Abstract

This paper describes an ultra thin, flexible device with organic light emitting diodes (OLEDs) between Parylene thin films (20 mum or less in total thickness). The device was formed on a glass substrate and could be easily peeled off without breaking. The OLEDs in the flexible device emitted light with high brightness, and were useful as excitation light sources for fluorescent dyes. We have also demonstrated a flexible probe with an OLED for the application of biological implants toward in vivo fluorescent imaging and optical stimulation of cells.