Samsung has been using AMOLED displays for quite some time, having much better performance compared to LCD panels. Compared between those two, the AMOLED displays are thinner, have better contrast and deeper blacks, but were more expensive, until now.
According to HIS Technology, a 5-inch 1080p AMOLED display cost around $14.30. A similar size 1080p LTPS LCD panel is slightly more expensive, priced at $14.60. These numbers are from 1Q16, while the panels were more expensive in 4Q15, priced at $15.70 and $17.10, respectively. This could mean that other entry-level and mid-range phones could start using AMOLED displays.