Direct integration of a 4-pixel emissive display into a knit fabric matrix

Jared P. Coyle; Bin Li; Genevieve Dion; Adam K. Fontecchio

doi:10.1117/12.2004855

Abstract

There exists a growing demand for displays in wearable applications. Wearable displays have traditionally been state-ofthe- art flexible designs that are subsequently mounted onto clothing fabric. Ideally, such a design would itself be fabricintegrated. Recently, much attention has been placed on work involving the weaving of photonic bandgap and other optical fibers to create a true fabric based display. Little exists in the technical literature concerning knit-based fabric displays. In this research, a prototype 4-pixel emissive fabric display is demonstrated. Conductive silver-plated nylon fibers act as a cathode. The fibers are coated in poly-2-methoxy-5-(2'-ethylhexyloxy)-p-phenylene vinylene (MEHPPV). When this layered structure is placed in contact with a separate metallic fiber (functions as an anode), a singlelayer PLED is formed. After drying and annealing, coated fibers are knit into a fabric matrix using a Shima Seiki SSG202SV automated knitting machine. The knit pattern itself provides a passive matrix addressing system similar to that of a more simple weave. Equivalent planar devices and single-pixel fiber structures are also fabricated. The resultant structures are all actuated, and current-voltage data is obtained for individual pixels using a source meter. Electroluminescence spectra are collected under tension using a UV-NIR spectrometer. The performance of the fiber devices is then compared to its planar analogues. Future directions for investigation are also proposed.

Citation Download Citation

Jared P. Coyle, Jared P. Coyle, Bin Li, Bin Li, Genevieve Dion, Genevieve Dion, Adam K. Fontecchio, Adam K. Fontecchio, } "Direct integration of a 4-pixel emissive display into a knit fabric matrix", Proc. SPIE 8643, Advances in Display Technologies III, 864308 (1 March 2013); doi: 10.1117/12.2004855; https://doi.org/10.1117/12.2004855

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