Oddball: Don't think thats correct.
It depends under which Class they are sold (the screen classes are globally standardized). If you buy a Class I screen, then ok, no dead pixels allowed. Class II screens have a small range of allowed dead pixels / brightness locked pixels until you are entitled to a replacement.
Class I / II screens are normally of a quite high quality, not many dead pixels allowed until you can get a free replacement.
Class III / IV are the problem, as they allow many dead pixels or brightness locked pixels.
You always need to check this class before buying, especially super discount shops tend to only sell class III so they simply can look cheaper than the others. (while they aren't in fact)
It depends under which Class they are sold (the screen classes are globally standardized). If you buy a Class I screen, then ok, no dead pixels allowed. Class II screens have a small range of allowed dead pixels / brightness locked pixels until you are entitled to a replacement.
Class I / II screens are normally of a quite high quality, not many dead pixels allowed until you can get a free replacement.
Class III / IV are the problem, as they allow many dead pixels or brightness locked pixels.
You always need to check this class before buying, especially super discount shops tend to only sell class III so they simply can look cheaper than the others. (while they aren't in fact)