Nokia reveals polarizing secrets of ClearBlack display
Source: http://www.engadget.com/2012/02/06/nokia-how-clearblack-display-works/
Nokia's revealing the secrets behind ClearBlack: its display technology that, even under the brightest sunlight, renders black as black as blackest night during a dark spell. Wedged above the E7, Lumia 800 and 900 displays are three thin layers, a linear polarizer, a quarter-wave retardation film and a reflecting surface. When light enters the first layer, it vertically aligns the "wave vibration" of the light so when it hits the retardation layer, it begins to rotate towards the right. Hitting the reflecting surface causes it to reverse, becoming left-circularly polarized before passing through the retardation later again, where it polarizes horizontally. This enables the polarizing filter up top to screen out horizontally polarized light, meaning it doesn't reflect back in your face. Why (we hear you ask) then doesn't it happen with the light from the display itself? Because it only passes through the second half of the process, it doesn't become horizontally aligned, leading to that beautifully dark display reaching your peepers. It's a clever and elegant solution that we can't help but be impressed at, even if we've used up the world's supply of the word 'polarize' in order to explain to you.
Nokia reveals polarizing secrets of ClearBlack display originally appeared on Engadget on Mon, 06 Feb 2012 17:29:00 EDT. Please see our terms for use of feeds.
Permalink
OLED-Info | 
Nokia | Email this | Comments
Android apps such as Jetpack Joyride, Madden NFL 12, Pinterest and Batman Arkham City Lockdown are rife with malware. But these aren't the official apps. No, they're merely impostor apps that have 
Iron Man's HUD display is one of the cooler effects in sci-fi movies, and 
Posts
