It has a single dead pixel guarantee but their stance regarding backlight bleeding is very disappointing ""Dell monitors do not have 100% backlight uniformity specification. As long as the center 2" circle meets our manufacturer specifications, it is acceptable"" .The source of this quote
http://accessories.ap.dell.com/sna/...cs=audhs1&l=en&s=dhs&sku=210-40773&redirect=1
If Dell is using Class 0 (A+ Panels), major backlight bleeding should be considered as a damaged panel or a defect. Backlight bleeding is very rare if Dell is using a premium panel. For example for every 1000 shipments of our own monitors - we only received 2 RMAs for backlight bleeding issues.
Backlight uniformity has nothing to do with back light bleeding. If you read all of Anandtech's monitor review, no monitor panel ever produced 100% backlight uniformity.
Backlight bleeding is normally seen coming from the corners and edges (you don't see it in the middle of the panel). From our analysis and tests, if your monitor has major backlight bleeding - most of the time it is from the result of the shipping courier or whom ever handle the package dropping it on the corner or side with enough force that the energy of the impact some how causes the backlight bleeding.
You can try this yourself. Find a monitor panel with little no back light bleeding - put it back in its original packaging, then drop the package on its corner or edge from about 6 feet or higher = backlight bleeding at the site of the impact. If you don't see backlight bleeding, keep trying with more force or higher drop, you will eventually produce back light bleeding (breaking the seal of the LG panel or denting the LG Panel).
Backlight bleeding is not really a Dell QC issue, more of UPS/FedEX playing hot potatoes with your monitors.