Quote:
Originally Posted by Ladyrixx
(I've noticed the same thing with leaving it by a window as we get to near-zero temps here. The screen doesn't like cold.)
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An E-Ink screen is temperature sensitive, so it does change contrast with temperature. The waveform calibration in the driver chip is supposed to compensate for that by monitoring ambient temperature and adjusting the waveform to keep the contrast stable. Apparently the compensation range is too small for all possible environmental conditions. The flip side of that is that the display will probably get much darker in an extremely warm environment.