Thread: Nokia N9 Screen Troubles (someone help me out confirm this)
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impact is offline impact
2011-11-27 , 19:27
Posts: 104 | Thanked: 74 times | Joined on Nov 2011
#175
Originally Posted by cm6 View Post
So we can conclude that the "mura" thing are these lines that appear due to non-uniform brightness:








But that still doesn't explain the black spots, which has nothing to do with the brightness because the pixels are switched off, i.e. no current.


I quote from the aforementioned site: "Polysilicon backplanes don’t provide uniform current because of manufacturing non-uniformities. Without IGNIS technology, the TFT circuits will provide different current to the OLEDs, which results in lines, spots, and cloudy areas known as “mura”."

Those black spots are mura and lines are mura, too. Mura is a term that describes all those imperfections.