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SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE
MODEL NO: DV-20400-S1FBLY/R22
DATA VISION
03/09/19
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2.6.1 Definition of optical characteristics
* Definition of angles
φ and θ
*Definition of contrast C
portion
unselected
of
Brightness
portion
selected
of
Brightness
2
1 =
=
B
B
C
Sensor
Light (When reflected)
Light (When transmitted)
LC panel
Y' (φ= 180
ο
)
Z (θ=0 ο)
X (φ= 90 ο)
Y (φ= 0
ο
)
(θ=90 ο)
φ
Z
X'
θ2
θ
θ1
i
unselected portion brightness curve
(bias voltage applied)
selected portion
brightness curve
Dark
Brightness
Bright
Operation voltage Vopr
(%)
(V)