Page
Optical Characteristics of Backlight
Item
Brightness
Brightness Uniformity
Note 1. Measurement Condition:
Display data should be all “ON” (D0~D7=HIGH).
VDD=5.0V, VLED=4.3V, ILED=288mA,V
LCD
should be adjusted at the voltage where
the peak contrast is obtained by naked eyes as the “All Q” pattern.
Note 2. Measurement of the following 5 points on the display.
Note3. The brightness shall be the average of P1~P5 point.
Note 4. Definition of the brightness Uniformity
Average brightness
(
Min,
100
-
Typ.
150
-
Max.
-
±30
Unit
cd/m
2
%
Remark
Note 1,2,3
Note 2,3,4
Y=160
Y=480
Y=800
X=60
X=120
X=180
dots
Active area
P2
P1
P3
P5
P4
dots
Max brightness or Min brightness – Average brightness
x100%
)