Quote:
Originally Posted by rkomar
I guess this makes sense if you assume that they apply some voltage for some specific amount of time that is tailored to shift a pixel from one grayscale value to another. If the pixel is actually displaying a different grayscale colour to start with than the driver thinks it should be (like in the ghosted regions), then the resulting pixel colour will be wrong. A full refresh means driving each pixel to full black or full white (i.e. a known state), and then applying the fine-tuned electric field to produce the final desired grayscale colour value. Does that sound right?
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They do apply some voltage for some specific amount of time that is tailored to shift a pixel from one grayscale value to another. That is why the screen only uses energy when there is a page turn.
One thing is that a pixel is more than one capsule, and the other is that the image in the video is supposed to be black and white, not grayscale. The fact that the pixels are gray on the edge is due to being adjacent to a pixel that had been black. It is faster to make everything white by applying the reverse voltage first and then the correct voltage than if you would wait for the ghost to disappear.