MKBHD did a review of a TCL phone with an NXTPAPER display and the screen looks like just a normal LCD with a matte screen protector. It has some extra layers physically to limit the amount of blue light, but it 100% looked like any other phone screen with a "paper-like" screen protector on top. The only other thing were the screen modes that would wash out colors (partially or completely) to imitate the "paper look", but it's still pretty much glowing like any other regular display