Acer B223W - Page 31

SPEC NO.
MT220WW 01 V.0
PAGE
16/23
ALL RIGHTS RESERVED ANY PORTION OF THIS DOCUMENT SHALL NOT BE REPRODUCED, COPIED, OR TRANSFORMED
TO ANY OTHER FORMS WITHOUT
PRIOR
WRITTEN
PERMISSION FROM INNOLUX DISPLAY CORPORATION.
Note 5: Definition of contrast ratio:
Contrast ratio is calculated by the following formula.
Note 6: Driving conditions for CCFL: I
L
= 7mA, 50 KHz Frequency.
Note 7: Definition of viewing angle.
Note 8: Definition white uniformity:
Luminance are measured at the following nine points (P1~P9).
Signal(Relative value)
"Black"
Tr
Tf
"White""White"
0%
10%
90%
100%
Contrast ratio (CR)=
Brightness on the "white" state
Brightness on the "black" state

W

=
Minimum Brightness of
nine
points
(
P
1~
P9
).
Maximum Brig
htness of
nine
points
(
P
1~
P9
).