Quote:
Originally Posted by badbob001
There is also speculation that e-ink particles left in a particular state for too long may get 'stuck'. Someone did post microscope images of an old e-ink display that looked spotty with stuck particles. I wonder if cycling the screen between full-size images of solid white and solid black helps 'clean' up the screen or if an utility is needed to drive the same images to the screen but at a higher voltage.
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A lot of those older displays are also based on earlier generations of the technology. It's completely plausible that the older displays were like that from the factory (newer models are 'cleaner' in areas of white than the 505/etc ever were).