In a more serious tone, actually I’d thought of such a device (and an eyeglass contraption with a ‘monitor’).
That was back in the mid 90s.
No patent. No prototype. Just an idea (some of which I sketched out) and didn’t bother to share with much of anyone.
The display addresses the issue of making something readable without having to have that glass panel (alternatively some people are working on fiberoptic cloth ‘screens’). The pen (wireless) also solves the clunky mouse input (you can write and draw with a pen/stick).
Some of these ideas are not unique, which is why others arrive at them (especially as new technologies in microsizing, processing power, etc. arise).
With the progress being made in brain technology (electronic eyesight to the blind), you may one day have something plugged into a port on your head and no ‘monitor/display’ at all (except maybe a simple status/error code).
I’m thinking twenty years from now the kids will look at the tech we’re using today and chuckle about its rudimentary design.