I may drop by on the way down to Seattle tomorrow and grab a couple. I have no idea what I would do with them. But at $10 you can't go wrong.
Could this be what they are for?
http://www.intermec.com/eprise/main/...duct=CMPTRCT60
This is what the PDF says:
Display: 26.4cm (10.4”) Active Matrix color display; All-Vis (sunlight readable) or transmissive (indoor). Active backlight control turns backlight off when not needed.