A low-power flexible organic light-emitting diode (OLED) display device based on low temperature color filters with a thin film encapsulated RGB OLED microcavity is achieved with high contrast ratios (up to 150 000:1 in dark ambient) and low power consumption (34% power saving compared to polarization film). Furthermore, a mechanical 10 000 times folding experiment with a folding radius of 1 mm demonstrates the mechanical reliability of the flexible OLED device.