Originally Posted by l_macd
The one difference between the Kindle Paperwhite and all the other front-lit e-readers that is a nailed on certainty is the capacitive screen on the PW compared to the infra red screen on all the others. So it seems likely that it's not the light diffuser tech that is the issue alone, instead how the light diffuser and capacitive screen layer work together.
Very unlikely, I'd say. The capacitive touch screen is just a very thin, completely transparent, chemical layer painted on to the screen below the light diffuser. There's no physical contact between the light diffuser and the capacitive touch screen.