BRIGHT DOT DEFECTS
ACCEPTABLE LEVEL
MODEL
220VW8
1 lit sub-pixel
3
2 adjacent lit sub-pixels
1
3 adjacent lit sub-pixels (one white pixel)
0
Distance between two bright dots
15mm
Bright dot defects within 20 mm circle
0
Total bright dot defects of all type
3
BLACK DOT DEFECTS
ACCEPTABLE LEVEL
MODEL
220VW8
1 dark sub-pixel
5
2 adjacent dark sub-pixels
2
3 adjacent dark sub-pixels (one white pixel)
1
Distance between two black dots
15mm
Black dot defects within 20 mm circle*
1
Total black dot defects of all type
5
TOTAL DOT DEFECTS
ACCEPTABLE LEVEL
MODEL
220VW8
Total bright or black dot defects of all type
5
8.8 Newton
Ring
No Newton Rings visible.
8.9 Luminance Output
8.9.1 Luminance
Output
Test resolution:
1680 x 1050 at 60 Hz
Test condition:
video input (RGB) = maximum white
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:
B_min
X
100%
B_max
Where B_max = Maximum brightness
B_min = Minimum brightness
8.10 White
Uniformity
Definition of White Variation
(δ
W):
67
220VW8 LCD