The da220hql is technically a tablet seeing as is operates on android 4.0. And is listed as a tablet on some sites. It has hdmi input. Sorry there's no misinforming here.
https://www.flysight.com/index.php?ac=article&at=read&did=18
Try and at least searching for this before misinforming people that they do not exist. Because in fact they do exist.