https://blog.wongcw.com/2018/11/29/lg%e9%a0%90%e5%91%8aoled%e9%9b%bb%e8%a6%96%e6%96%b0%e5%93%81%ef%bc%9a%e6%90%ad%e8%bc%89%e7%ac%ac%e4%ba%8c%e4%bb%a3alpha-9%e8%99%95%e7%90%86%e5%99%a8%e3%80%81%e6%88%96%e9%85%8dhdmi-2-1/