Has anyone ever seen any white led 7 segment displays?
Do they exist?
Blue LED certainly exists (I reviewed Lite-On LTS-5501AB here in this
newsgroup several years ago) but I've yet to see white, even though
the semiconductor technology should be similar.
Numitrons have nearly-white segments, especially at 7V, but the
filaments tend to burn out quick if you run them there
.
I've also seen 7-segment displays built with 4-foot flourescent tubes!
Tim.