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Feb 05, 2012

Nokia's ClearBlack Display technology has been announced in September 2010, and Nokia is using it in several phones (including the Lumia 900, Lumia 800 and older Symbian models such as the X7 and E7). We know that it includes polarizing filters to block incoming light. Today however Nokia finally revealed how it actually works:

Nokia CBD explained image



A CBD filter includes both a linear polariser and retardation layers between the surface of your phone and the display. When light hits your screen, this is what h...

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