Where is the backlight located?

In the questions/answers some posts indicate that the backlight is part of the display/touchscreen assembly, while others indicate that it is located on the logic board.

My son washed his nano in the pocket of his jeans like so many others have. After drying it in a low temp oven it works fine except that the backlight is out. You can still see the screen if you hold it under a bright light.

I don't need a new screen, unless that is the only way to get a new backlight. I don't see any mention of backlight in either the repair manual or the parts page for the display module. Can anyone confirm if the backlight is part of the display assembly or the logic board (or something else) in the ipod nano 6th generation?

ifixit, it would be great if you could update the repair manual to include this info. I see that others have the same question/problem.

thanks,

--steve