Philips 220VW8FB/00 Service Manual page 67

1 lit sub-pixel
2 adjacent lit sub-pixels
3 adjacent lit sub-pixels (one white pixel)
Distance between two bright dots
Bright dot defects within 20 mm circle
Total bright dot defects of all type
1 dark sub-pixel
2 adjacent dark sub-pixels
3 adjacent dark sub-pixels (one white pixel)
Distance between two black dots
Black dot defects within 20 mm circle*
Total black dot defects of all type
Total bright or black dot defects of all type
8.8 Newton Ring
No Newton Rings visible.
8.9 Luminance Output
8.9.1 Luminance Output
Test resolution:
Test condition:
8.9.2 Brightness
To follow Panel specification. sRGB = 80 ± 10 nits.
8.9.3 Brightness uniformity
Set contrast at 100% and turn the brightness to get average above 300 nits at centre of the screen.
Apply the Fig 1, it should comply with the following formula:
Where B_max = Maximum brightness
B_min = Minimum brightness
8.10 White Uniformity
Definition of White Variation (£ _ W):
BRIGHT DOT DEFECTS
MODEL
BLACK DOT DEFECTS
MODEL
TOTAL DOT DEFECTS
MODEL
B_min
X 100%
B_max
ACCEPTABLE LEVEL
220VW8
15mm
ACCEPTABLE LEVEL
220VW8
15mm
ACCEPTABLE LEVEL
220VW8
1680 x 1050 at 60 Hz
video input (RGB) = maximum white
220VW8 LCD
3
1
0
0
3
5
2
1
1
5
5
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