This is an LCD screen with active-power measured in micro-amps. This means that memory-lcd is more power-efficient than e-ink even if it updates once every 5 minutes. (though the less you update, the better e-ink gets).
If I’m not mistaken yes the power does go. I have a smartwatch with a 30day+ battery life (Amazfit Bip) which also uses I believe the same type of display.
It’s ~somewhat similar to a calculator 8 segment display in operation - low power, low resolution/pixel density, can be inverted etc. Or maybe old gameboys perhaps?
They still sell those on Digikey: https://sharpdevices.com/memory-lcd/
https://www.digikey.com/en/products/detail/sharp-microelectr...
This is an LCD screen with active-power measured in micro-amps. This means that memory-lcd is more power-efficient than e-ink even if it updates once every 5 minutes. (though the less you update, the better e-ink gets).