A defective pixel on an LCD screen. Bad pixels are often transistors that are permanently dead and appear as black dots or permanently energized and show up as white or colored dots ("hot pixels").
The biggest upgrade, however, would have been the display. The Pixel Tablet was apparently lined up for a 120Hz refresh rate screen, alongside a slight bump in the peak brightness figures.
Dead Pixels is a new comedy about gamers that promises ... best reputation among gamers for the way it represents them on screen, but the actors hope this show will do a better job of finding ...