|
I think the way that eInk "works" provides a simple explanation for this.
A "pixel" on an eInk screen is a fluid-filled cell containing lots of little particles which are black on one side, and white on the other. They "flip" from "white side up" to "black side up" and vice versa when the appropriate electric current is passed through the cell.
I think that all that's happening here is that when the screen is "white", a small fraction of the cell particles are still showing "black", hence the tiny little black dots which "dust" the screen if you look at it very closely.
That's just an "off the cuff" guess at what's happening, but I think it might well be the correct explanation.
|