
97-1
97.1 Introduction
Liquid crystals (LC) are an important class of materials with applications ranging from display devices,
television screens, optoelectronic devices, sensors, and biological and structural materials. e focus of
th
is
ch
apter
wi
ll
be on LC
s
fo
r
di
splay
ap
plications
. In gen
eral,
mo
st
su
bstances
ha
ve
a si
ngle
me
lting
poi
nt
w
here
a s
olid
p
ossessing
a p
ositional
a
nd
o
rientational
o
rder
c
hanges
u
pon
m
elting
t
o
a
n
i
sotro-
pic
liq
uid
th
at
ha
s
ne
ither
po
sitional
no
r
or
ientational
or
der
. Ho
wever,
so
me
ma
terials
wh
en
me
lted
fr
om
th
e
so
lid
st
ate
ch
ange
in
to
a cl
oudy
liq
uid
wi
th
or
ientational
or
der
at on
e
te
mperature,
an
d
up
on
fu
rthe ...