Has anyone added a backlight to their calc?

[JimP]

(02-04-2014 11:51 PM)mindheavy Wrote:  I'm curious about adding a small LED to backlight the screen. I use daily a 50g so the size of it's screen may require two or more to light the entire surface. Has anyone known of any guides around, or done it themselves?

Never done it on HP hardware, but doesn't the Casio FX-9860G Slim (one of the best monochrome displays) have one built in?