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AMOLED Displays Are Now Cheaper To Produce Than LCD (androidauthority.com)
An anonymous reader quotes an article on AndroidAuthority: Optics pundits have been crowing about AMOLED destroying LCD for a while now: they are thinner, brighter, more energy efficient and arguably offer better colors, higher contrast, and deeper saturation than LCD. The biggest barrier stopping AMOLED from taking over as the smartphone display technology of choice has been price. Until now that is. As predicted two years ago, it has only taken 24 months for AMOLED production costs to fall below that of LCD. Production costs in the first quarter for a 5-inch Full HD smartphone display are $14.30 for an AMOLED panel and $14.60 for an LCD display. In the fourth quarter of 2015, these figures were $17.10 and $15.70, respectively. [...] With AMOLED production costs dropping below LCD for the first time, AMOLED panels will soon become the default display technology choice for manufacturers on their mid-range and entry-level devices as well.
From what I understand, the blue OLED ages at a faster rate than the rest of the display, which means that it will appear to turn yellow over time. If you have a static image on the display, then it will age unevenly.
LCD panels don't age in a way that makes the colors change, so they don't get burn in (the closest thing they get to burn in is image persistence, which is only temporary.)