Over last month or so, a crack has been forming on my PSP. It started about 2 milimeters to the left of the center screw on the bottom of the psp, traveled upwards through the faceplate and through the "S" in the PSP logo, reached the screen area and then continued at around a 45 degree angle going right for about an inch and a quarter. I can't see any distortion or ruined pixels (stuck/dead) in the area, and to my knowledge nothing is wrong with the screen itself.
My question is, is it more likely that this is just a superficial problem that can be remedied by changing the faceplate, or has my screen has been damaged as well and will need replacing as well?
EDIT: I have also just recently bought a face armor for it to prevent any further damage.