
97-11Liquid Crystal Displays
97.4.6 LC Material Filling
Aer the empty cell is fabricated, it is lled with the LC material. Because the cell thickness (spacing) is
sm
all
(∼5–
10
μm)
,
it is l
led
usi
ng
sp
ecial
te
chniques
. e mo
st
po
pular
l
ling
me
thod
is by ev
acuating
th
e
ce
ll
in a va
cuum
ch
amber,
di
pping
th
e
l
l
ho
le
in
to
a ve
ssel
co
ntaining
th
e
LC ma
terial,
an
d
in
creas-
ing
th
e
pr
essure
in th
e
ch
amber
. As th
e
ch
amber
pr
essure
is ra
ised,
th
e
ce
ll
ge
ts
l
led
by ca
pillary
ac
tion
.
A
er
th
e
ce
ll
is co
mpletely
l
led,
th
e
l
l
ho
le
is ca
pped
by usi
ng
an ep
oxy
ad
hesive
th
at
is ch
emically
compatible with the LC material.
97.4.7 External Components
The ...