https://qooah.com/2014/04/27/%e6%9c%89%e6%b6%88%e6%81%af%e6%8c%87-padfone-x-%e5%b0%87%e6%8e%a1%e7%94%a8-dynamicdisplay-%e6%8a%80%e8%a1%93/