Surface plasmon tunable color filter and projection display

A novel projection display, based on a new phenomenon of voltage-induced color-selective absorption with surface plasmons, are able to generate bright image on a large screen with high efficiency. In addition, neither color filters nor phosphors are needed to generate the color. With the incident beam of +/- 7 degree(s) half cone angle, the color purity of this device can be as good as the CRT displays, and the contrast ratio can reach over 200:1. System analysis shows, for a color sequential single panel 1.8' surface plasmon projector, the luminous efficiency can reach 3 Lumens/Watt.