Philips Dell W2300, Service Manual

Page: 22 / 126

Definition of Pixel Defect
22
W2300
Go to cover page
3.0 Inspection Criteria
3.1. Dot Defect
3.1.1. Bright Dot
Dots(sub -pixels) which appeared brightly in the screen when the LCM
displayed with dark pattern.
- R,G or B 1 dot --------------------------------- Max. 1
- Adjacent 2 dots -------------------------------- Not Allowed
- Total amount of Bright dots -------------------- Max. 1
3.1.2. Partial Bright Dot
1) A partial bright dot damaged less than one third size of sub-pixel is not
counted as a bright dot defect.
2)Any bright dot seen from 0 to 60 gray scale is ignored,
seen from 61 to 127 gray scale is acceptable within Max.10 bright dots
seen over 128 gray scale is counted as a bright dot.
3.1.3. Dark Dot
Dots(sub -pixels) which appeared darkly in the screen when the LCM
displayed with bright pattern.
Dark dot defect damaged less than half size of sub-pixel is not counted as dark dot
defect.
- 1 dot -------------------------------------------- Max 5
- Adjacent 2 dots -------------------------------- Max 2
- Adjacent 3 dots --------------------------------- Max 1
- Total amount of Dark dot ---------------------- Max 5
- Dark dot distance------------------------------ Min. 20 mm
3.1.4. Total amount of Dot Defects -------------------- Max 6 (Combination)
Note) a. Every dot herein means Sub-Pixel(Each Red,Green, or Blue Color)
b. Dots darker than half brightness of sub-pixel are not defined as bright
dot defect and dots brighter than half brightness of sub-pixel are not defined
as dark dot defect.