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Originally Posted by tompe
Mine is on all the time since it displays the time. But the back light is not on all the time. So I do not believe that LCD without back light affect the reading time compared to the CPU consumption which give a standby time of 5 days in for example the Cybook.
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Missing the point. Your LCD needs constant electricity to run (it needs constant power to keep the cells charged). eInk just needs the power on page change for the pushing and popping of pixels (per se).
Take a look at:
http://electronics.howstuffworks.com/e-ink2.htm
Quote:
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E Ink said that in electronic devices, electronic ink would use 50 to 100 times less power than liquid crystal displays because electronic ink only needs power when changing its display. For this same reason, a digital book can display the same text for weeks without any additional charge applied to it.
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