I think its a hp envy that has a hdmi port on its keyboard dock. why not reverse that.
have a normal laptop with more computer power and a detachable screen.
and yes it would need a hdmi and seperat powersupply on the side , or a dock/stand for desktop mode.
1) it can be sold separately as a monitor with a stand.
2) if screen breaks on laptop it is no longer broken , just buy a new screen and click in.
3) you can choose resolution and type of screen panel, as long as the laptop can power it, a standard power voltage/amp, and and power converters on all screens/monitors, to get the correct one they need.
4) a more crasy idea would be to but a , 17" screen on a laptop designed for 11.6" , it would probable fall over. but whit a universal dock and power, with no limits to the sides on the laptop, that would be a cool posibility..
a well just fold the laptop together and connect a TV/monitor whit hdmi , problem solved..