Polymer light-emitting diodes (PLED), also Light-Emitting Polymers (LEP) involve an electroluminescent conductive polymer that emits light when subjected to an electric current. Developed by Cambridge Display Technology. They are used as a thin film for full-spectrum color displays and require a relatively small amount of power for the light produced. No vacuum is required, and the emissive materials can be applied on the substrate by a technique derived from commercial inkjet printing. The substrate used can be flexible, such as PET. Thus, flexible PLED displays may be produced inexpensively.
Typical polymers used in PLED displays include derivatives of poly(p-phenylene vinylene) and poly(fluorene). Substitution of side chains onto the polymer backbone may determine the color of emitted light or the stability and solubility of the polymer for performance and ease of processing.
No comments:
Post a Comment