
94-1
94.1 Introduction
Electroluminescence (EL) is the nonthermal generation of light resulting from the application of an elec-
tric eld to a substance. e light-emitting substance is generally a luminescent crystal. Most commer-
cially
av
ailable
mo
nochrome
EL di
splays
ut
ilize
Zn
S:Mn
as th
e
lu
minescent
ma
terial
. EL di
splays
ha
ve
become very important in certain display markets. ese include medical instrumentation, industrial
control equipment, portable instrumentation, and military vehicles. e attributes of EL displays that
ma
ke
th
em
at
tractive
in th
ese
ty
pes
of ap
plications
ar
e
me
chanical
ru
ggedness,
re
lative
in
sensitivity
to
ambient temper ...