Android-based handheld game console with both touchscreen and gamepad input capabilities, released by Nvidia in July of 2013. Initially dubbed simply "Nvidia Shield," now known as Shield Portable to differentiate it from other Shield products.
Type the model number in ebay. It should come up with a few results for parts. If you can't find anything you might have to buy a parts unit and pull the parts from that. Just make sure the screen works on the parts unit if you decide to go that route.