Quote:
Originally Posted by Andrew H.
But I don't believe that there are different grades of Pearl screens used in e-ink readers.
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I was under the impression that binning into quality (or more often, variability) ranges was extremely common with electronics components. You can see it here for example with regard to LEDs
http://www.yegopto.co.uk/expertise/Intensity_Binning
I find it extremely easy to believe that there are different bins or 'grades' of Pearl screens at slightly different prices. That might not necessarily be for differences in contrast though, it might be by percentage likelihood of dead pixes, % failure rate, color tint etc. or indeed any combination of the above.
If a factory might be able to give you 1 million screens a month at $50 if you accept contrast variations of +/-10% and colour balance within 5% of spec, but only 700K screens at $65 each if you want contrast within +/- 7.5% and colour within 2.5%, what do you buy?