Quote:
Originally Posted by Korn on the Kobo
* EPDs (electrophoretic displays = eink screens) work opposite of LCDs in that they consume energy to display black. This DIY jig saves them from struggling to keep the bubbles of almost the entire display charged to keep the pigment visible on top while you mindlessly tap Klondike cards.
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It takes the same energy to change a pixel from white to black as it does to change from black to white. And once a pixel is set, it takes no energy to maintain that state. That is the reason why eInk displays take less energy. When I power off my Kobo, the image on the screen will remain for months.
One other item is that the capsules contain both white and black pigment unless you have a truly antique eInk display.
