I think it’s so lame that buying a LCD has to be a gamble. If they are going to ship defective units out, they should at least pre-test them and sell them as 100% working, 1 dead pixel, 2 dead pixels, etc and price them accordingly.
ViewSonic sets limits on 20" & greater LCD's at 10 bright sub-pixels, 10 dark sub-pixels, or a combination of 10.
If the industry attempted to set a zero standard, the current manufacturing yield would be so low that the cost of an LCD display would be many times higher than it is today. Luckily, most customers and applications are tolerant of a low level of non-performing pixels and prefer the lower cost that the existing standards allow.
http://www.viewsonic.com/support/qa.cfm?topic=lcd&question=01
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