Dead pixel policy
Also called pixel warranty · zero bright dot
A dead pixel policy is the manufacturer’s rule for how many faulty pixels a screen must have before it qualifies for repair or replacement. Many brands require several defects or a bright dot in the center of the screen.
The number and type of pixels matter, so photograph each one against the color that shows it best before you file a claim.
In practice
Pixel policies decide whether your faulty pixels get your screen replaced. They differ by maker and sometimes by product line. Some count bright stuck pixels more strictly than dark dead ones. Some promise zero bright dots on premium models. Retailer return windows are often more generous than the manufacturer’s policy.
How to check
Find each faulty pixel with the dead pixel test and note its color and location. Then look up the warranty terms for your exact model and count against them. If you are inside the retailer’s return window, return it there first, since you won’t have to argue about the manufacturer’s pixel count.