Definition Of Pixel Defects; Dot Defects; Polarizer Defects - Dell W2607C Service Manual

6.Definition Of Pixel Defects

6.1 Dot Defect
6.1.1 Bright Dot
Bright dot is defined as Dots (bigger than half sub-pixels), which appeared brightly in the screen when the LCM
displayed with whole pattern.
- R, G or B 1 dot --------------------------------- not allowed
- Total amount of dark dots -------------------- not allowed
6.1.2 Dark Dot
Dark dot is defined as Dots (bigger than half sub-pixels) which appeared darkly in the screen when the LCM
displayed with bright pattern.
- 1 dot -------------------------------------------- 4 Max
- Adjacent 2 dots -------------------------------- 1 Max
- Adjacent above 3 dots --------------------------not allowed
- Total amount of Dark dot ---------------------- 4 Max
6.1.3 Total amount of Dot Defects -------------------- 4 Max (Combination)
Note) a. every dot herein means Sub-Pixel (Each Red, Green, or Blue Color)
b. Dots smaller than half sub-pixel are not counted as defect dots.
c. The dot defect is inspected on Red, Green, Blue, White or Black pattern.
d. Extraneous substances, which can be wiped out, like Finger Print, Particles, are not considered as a defect.
e. Defects which is on the Black Matrix (outside of active area) are not considered as a defect.
f. Weak bright dot (Less than 50% of sub-pixel)................. Max 8 on 64 Gray patterns.

6.2. Polarizer Defects

Where, W: Width
L: Length
D: Average diameter =(a+b)/2
a. Average Diameter
b. Linear:
c. Extraneous substances, which can be wiped out, like Finger Print, Particles, are not considered as a defect.
d. Defects which are on the Black Matrix (outside of Active Area) are not considered as a defect.
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Dell W2607C