Emillective display with integration of reflective liquid crystal display and organic light emitting diode

Abstract

A novel emi-flective display which integrates a reflective liquid crystal display (R-LCD) and an organic light emitting diode (OLED) was demonstrated, whose OLED achieved a gain factor of 8 in contrast ratio (CR) compared with the conventional OLED. Under the high light ambience, the R-LCD is sustained with the CR of 10:1 at the viewing angle between +/- 55 degrees; while in the dim ambience, the OLED is operated with the CR of 5000 : 1 at +/- 50 degrees. By replacing the backlight system with OLED, emi-flective display has the benefits of lighter weight (< 90%), thinner form factor (< 40%), and lower power consumption (< 2%, under sunlight) compared with the conventional LCD; therefore, to be very applicable for mobile products.