Color filters for reflective display with wide viewing angle and high reflectivity based on metal dielectric multilayer

We report high performance reflective color filters based on one-dimensional metal-dielectric multilayer. Wide viewing angle of +/- 50 degrees, far beyond that with conventional all-dielectric multilayers, is achieved while maintaining approximately 100% peak reflectance and color reproducibility. Reflectance of 40% in white mode and color gamut of 47% to the United States National Television Systems Committee (NTSC) standard is demonstrated. The proposed color filter is integrated into 3.5-in. color reflective display and shows 30% increase in brightness than conventional dye color filters. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4768298]