GoKawiilExplainer clarifies difference between stuck and dead pixels on screens
Screen defects that appear as small persistent dots generally fall into two categories: stuck pixels and dead pixels. Stuck pixels remain lit with a color that doesn't change, often appearing as red, green, or blue dots, while dead pixels stay completely dark because they receive no power at all. The two look similar but differ in cause and, crucially, in whether they can be repaired.