ELECTRO-OPTICAL CHARACTERISTICS

ELECTRO-OPTICAL CHARACTERISTICS
1. TN TYPE (Twisted Nematic)
ITEM
SYMBOL
CONDITION
MIN
TYP
MAX
UNIT
NOTE
∅2-∅1
K
K=1.4
∅=25°
θ=0°
∅=25°
θ=0°
∅=25°
θ=0°
20
6
-
-
DEG.
-
1,2
3
-
150
250
mS
4
-
150
250
mS
4
SYMBOL
CONDITION
MIN
TYP
MAX
UNIT
NOTE
∅2-∅1
K
K=1.4
∅=25°
θ=0°
∅=25°
θ=0°
∅=25°
θ=0°
40
9
-
-
DEG.
-
1,2
3
-
250
400
mS
4
-
200
250
mS
4
VIEWING ANGLE
CONTRAST RATIO
RESPONSE TIME (RISE)
tr
RESPONSE TIME (FALL)
tf
2. STN TYPE (Super Twisted Nematic)
ITEM
VIEWING ANGLE
CONTRAST RATIO
RESPONSE TIME (RISE)
tr
RESPONSE TIME (FALL)
tf
Z(∅=0°)
∅2
K
∅1<25°<∅2
∅1
Y1(∅=180°)
1.4
X´
X
∅1
Y(θ=0°)
NOTE1. Definition of angle ∅ and θ
25°
∅2
NOTE2. Definition of optical response
Brightness of non-selected dot (B2)
K= Brightness of selected dot (B )
1
Brightness curve of non-selected dot
B1
Driving Voltage (V)
NOTE3. Definition of contrast ‘K’
ON
10%
OFF
100%
90%
ON
B2
Brightness
Brightness (%)
Brightness curve of selected dot
tr
tf
NOTE 4. Definition of optical response
Page 4