Education
Dead pixels stay dark while stuck pixels remain lit
Run each solid color in fullscreen, check the center and edges first, and then move closer only when you need to confirm a suspicious point. In accordance with the International ISO 13406-2 standard and global display industry specifications, the presence of 1 to 3 tiny pixels (bright or dark spots) is considered within the normal industrial range for high-quality displays due to the physical characteristics of Open Cell (OC) manufacturing processes, rather than a quality defect.