Note 1: Definition of angles q and Æ
Note 2: Definition of viewing angles q1 and q2
Light (when reflected) z (q=0°)
Cmax.
Sensor
q
Y’(Æ=180°)
Contrast
LCD panel
C
2.0
X’
X(Æ=90°)
Æ
Z’
q1
q2
Light (when transmitted )
Y(Æ=0°)
(q=90°)
viewing angle q (Æ fixed)
Note : Optimum viewing angle with the
naked eye and viewing angle q at
Cmax. Above are not always the same
Note 3: Definition of contrast C
Note 4: Definition of response time
Brightness (reflection) of unselected dot (B2)
C = ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾
Brightness (reflection) of selected dot (B1)
VLCD
Brightness (reflection) of
selected dot
0
(%)
-VLCD
Brightness
Non-selected state
Selected state
Non-selected state
(reflection) of
B2
Contrast
90%
unselected dot
Brightness
B1
(reflection)
10%
Time
tr
tf
0
Note: Measured with a transmissive LCD
panel which is displayed 1 cm2
operating voltage (v)
VLCD : Operating voltagefFRM : Frame frequency
tr : Response time (rise) tf : Response time (fall)
PS2002LRS-AWA-B-01 Rev.0(DK)
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