Patent ID: 7450196
Filing Date: 2008-11-11
Classification: B82Y,G02B,G02F

Abstract:
1. A reflective display device using photonic crystals, comprising: a plurality of reflective color filters, each reflective color filter having photonic crystals in a periodic arrangement of dielectrics and reflecting a predetermined wavelength range of an incident visible light; and a plurality of optical switches disposed adjacent to and facing a corresponding one of the plurality of reflective color filters, each of the plurality of optical switches extracts a predetermined color by adjusting an intensity of on/off-frequency of light reflected from the corresponding one of the plurality of reflective color filters, wherein each of the plurality of reflective color filters comprise photonic crystals having a band gap that reflects one range of light wavelengths corresponding to a color selected from the group consisting of red (R), green (G), and blue (B).