Samsung could be working on a futuristic Galaxy smartphone with a transparent display according to a recently unearthed patent. The talented designer Snoreyn (Giuseppe Spinelli) has made some beautiful concept renders for the transparent Samsung Galaxy based on the patent documents. Tony Stark/Iron Man – eat your heart out.
https://www.notebookcheck.net/Stylish-Samsung-Galaxy-transparent-smartphone-renders-by-Snoreyn-would-make-even-Tony-Stark-consider-an-upgrade.492500.0.html
power source/battery? as well as other internal components for the side buttons? you know most users will (need) a camera.
i can imagine an actual "transparent" device being possible...only as a Bluetooth companion touchscreen/device.