https://qooah.com/2013/01/23/samsung-amoled-%e9%9d%a2%e7%89%88%e5%b0%87%e6%94%be%e6%a3%84-pentile-%e6%8e%92%e5%88%97-%e6%94%b9%e6%88%90%e5%85%ad%e8%a7%92%e5%bd%a2%e6%8e%92%e6%b3%95/