Note 1: Definition of angles
θ
and
∅
Light (when reflected)
z (θ=0
°)
Sensor
Note 2: Definition of viewing angles
θ1
and
θ2
Cmax.
θ
Y’(∅=180°)
Contrast
X’
LCD panel
X(∅=90°)
∅
C 2.0
Z’
Light (when transmitted )
Y(∅=0°)
(θ=90°)
Note :
θ1
θ2
viewing angle
θ
(∅ fixed)
Optimum viewing angle with the
naked eye and viewing angle
θ
at
Cmax. Above are not always the same
Note 3: Definition of contrast C
Brightness (reflection) of unselected dot (B2)
Note 4: Definition of response time
C =
Brightness (reflection) of selected dot (B1)
V
LCD
Brightness (reflection) of
selected dot
0
(%)
Brightness
B2
Brightness
(reflection)
-V
LCD
Non-selected state
Selected state
Non-selected state
(reflection) of
unselected dot
Contrast
90%
10%
B1
Time
tr
tf
0
operating voltage (v)
Note: Measured with a transmissive LCD
panel which is displayed 1 cm
2
V
LCD
: Operating voltagef
FRM
: Frame frequency
t
r
: Response time (rise)
t
f
: Response time (fall)
PS2002LRS-AWA-B-01
Rev.0(DK)
Page6
POWERTIP [ POWERTIP TECHNOLOGY ]
