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Possible explanation for NBE September 18, 2007

Posted by reverseengineer in Hardware, iPods, Issues.
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An LCD engineer from Taiwan posted on the Apple Discussions page on the Apple Support site today a possible explanation for the Negative Black Effect plaguing the new iPod Touch as being poor quality control with the anti-reflective (AR) coating on the screens. The engineer says:

The AR coating is essentially a clear layer that prevents light from reflecting off of that surface. What’s happening here is the upper glass layer is reflecting light from the LCD screen back down onto the said screen. Without an AR coating you get exactly what you see – shimmering blacks. The problem isn’t noticeable with vibrant colors on screen. Rotating the screen will change the way this light is reflected to your eyes and may minimize the problem, but since the LCD was engineered to give best color output when looking straight on, you’re left with a losing battle.

No official response yet from Apple, but the AR coating theory seems as good an explanation as any. Let’s hope it’s this simple.

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1. Ipod Stuff » Possible explanation for NBE - September 18, 2007

[…] Myspace.com Blogs:thii MySpace Blog wrote an interesting post today onHere’s a quick excerpt An LCD engineer from Taiwan posted on the Apple Discussions page on the Apple Support site today a possible explanation for the Negative Black Effect plaguing the new iPod Touch as being poor quality control with the anti-reflective (AR) coating on the screens. The engineer says: The AR coating is essentially a clear layer that prevents Posted in Mac-A-Doodle ( 34 links from 22 sites) […]


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