At the 2006 International Meeting on Information Display in South Korea, Samsung demonstrated prototype portable screens using AMOLED display technology.
AMOLED (Active Matrix Organic Light Emitting Diode) claims to have a much greater contrast ratio, lower power consumption, better viewing angle, wider color gamut and faster refresh rate than similar TFT LCD screens. Little is known about the display life at this point, but many current OLED displays have a fairly short lifespan.
[via AVING.Net]