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Note (7) Definition of White Variation (δW):
Measure the luminance of gray level 255 at 5 points
δW = Maximum [L (1), L (2), L (3), L (4), L (5)] / Minimum [L (1), L (2), L (3), L (4), L (5)]
W
Panel Specification
D/4
W/4
1
W/2
3W/4
3
Horizontal Line
D
D/2
3D/4
2
5
4
Active Area
: Test Point
X
X=1 to 5
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