Hi Bouke
Sounds like a genious little hack. How dell does it work? And do you have any pictures og the wiring?

I do not know if tis has been mentioned before? But if you have used one of the car screens for your project, it is quite easy to use a scissor to cut a simple protector from the one that comes with the screen.

It works, but may not be the most beautiful one

http://imgur.com/a/cRd0X

Hi Conqy

I gør that very same screen, but as my iron is very bad i broke the screen.

But if you can deattach the screen and gået it off the board, om the backside it clearly labels 5v and gnd. I do not think any real modification is needed on this screen.