OLED disadvantages

OLEDs aren't perfect. First of all, today it costs more to produce an OLED Display Module than it does to produce an LCD - although this should hopefully change in the future, as OLEDs has a potential to be even cheaper than LCDs because of their simple design. OLEDs have limited lifetime (like any display, really), that was quite a problem a few years ago. But there has been constant progress, and today this is almost a non-issue. Today OLEDs last long enough to be used in mobile devices and TVs. OLEDs can also be problematic in direct sunlight, because of their emmissive nature. But companies are working to make it better, and newer AMOLEDs are quite good in that respect - some even consider them superior to LCDs.