LG Display shows e-reader with a solar cell

LG Display is showing an e-reader prototype with a built-in thin-film solar cell. The solar cell is 10 cm in width and length, and the display is 6" in size. The solar cell is only 0.7mm in thickness, and weighs 20 grams.

Exposure to sunlight for about four to five hours would extend the running time of the e-book’s battery by a day without the need for additional charging. This would allow longer outdoor use of the e-book and lessens worries about battery discharging.