backlight and battery

[Werner Almesberger]

Jane Andreas wrote:
> 1what kind of backlight does the Ben have? CCFL or LED?

http://en.qi-hardware.com/wiki/Hardware-Ben
and
http://en.qi-hardware.com/wiki/Hardware_basics#LCD

lead to

http://en.qi-hardware.com/wiki/LCD

which has a nice link to

http://downloads.qi-hardware.com/hardware/datasheets/qi_lb60/LCM~GPM940B0--40PIN_2k9.0305.pdf

which answers many questions. Alas, while the MTTF of the LCD module
is specified as 50 khours, the backlight is explicitly excluded and
nothing else is said about its life expectancy.

- Werner