AMOLED stands for “active-matrix organic light-emitting diodes.” The main difference between AMOLED and OLED is that an AMOLED display contains thin strips of thin-film transistors (TFT) behind each pixel.
These transistors are like super-highways for electricity that help the electric current move more quickly across the entire display. With the presence of TFT, each pixel can be activated faster because electricity can reach the pixels faster.
With TFT, energy can be transferred quickly across a very wide display so you can maintain a fast refresh rate from edge to edge.
The AMOLED display is good for your eyes, too, because it emits a smaller amount of blue light than other displays do.