Try this video of my GBA backlight screen. Not a perfect look but you can kinda make out what I'm talking about. Think about how the PSP original & 2000 screens were -- smearing black. Not nearly as bad as them, but that's how it looks.
You would see it better if I could take a 60Hz video of this (or just looking in person).
Thanks. I thought it would be even more prominent. Looks good overall, unless in 60 FPS it is more obvious?