Your choice of e-reader devices continues to grow rapidly. And now LG is showing off its Solar Cell e-Book reader. The prototype has an energy conversion efficiency of about 9.6 percent. That means that it gives you an extra day’s worth of power to continue reading on that 6-inch TFT-LCD after four to five hours in the sun.

LG is working on getting that solar cell energy conversion efficiency rate to 12% by 2010 or up to 14% by 2012. Great news for bookworms, not so great if you have to read for your homework.

[Engadget]