Well, I had hoped to be able to cite an authority stating that e-ink consumes power only while changing state, but I can't.
E-ink displays are called "ultra-low power" devices and appear to pass current only while changing state, otherwise charge maintains the pixel light or dark. Is an all white off-er than an all dark screen?
There lies, I believe, the off-state confusion; just what is 'off'?
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