Originally Posted by
star_world
No it doesn't - it changes to a screensaver-type image, but anyone looking at it would certainly think it was off.
The e-ink screens do not use power unless changing pages, provided the wireless radio is off. That's why it switches to this mode and can leave an image on the screen.
In fact, you can completely remove the screen from the device and the image remains intact. Kind of like tearing a page out of a book.