Polarizer Defects; Foreign Material - NEC MultiSync LCD1700NX A Service Manual

2.3 Polarizer Defects

Display
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NOTE:
a. Average Diameter
b. Linear: a > 2b, Circular: a ≤ 2b
c. Extraneous substances which can be wiped out,
like Finger Print, Particles are not considered as a
defect.
d. Defects which is on the Black Matrix (outside of
Active Area) are not considered as a defect.

2.4 Foreign Material

Display
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NOTE:
c. Average Diameter
d. Linear: a > 2b, Circular: a ≤ 2b
Items
Linear Scratch
W: Width (mm)
L: Length (mm)
Circular Scratch
D: Average
diameter (mm)
Bubble
Peel off
Undulation
Items
Linear
Foreign Material
W: Width (mm)
L: Length (mm)
Circular
Foreign Material
D: Average
diameter (mm)
W = 0.02 or less
W = 0.04 or less
W = 0.08 over
D = 0.2 or less
D = 0.6 or less
D = 0.6 over
D = 0.3 or less
D = 0.5 or less
D = 1.0 or less
D = 1.0 over
Remarkable one is not allowed
b
W = 0.02 or less
W = 0.04 or less
W = 0.08 or less
D = 0.22 or less
D = 0.4 or less
D = 0.4 over
b
5-11
Criteria
L = Pass
L = 40 or less
L = 40 over
L = 20 or less
L = 20 over
a
Criteria
L = Pass
L = 2.0 or less
L = 2.0 over
L = 1.0 or less
L = 1.0 over
a
Pass
10
Not Allowed
10
Not Allowed
Pass
8
Not Allowed
Pass
10
5
Not Allowed
D=(a+b) / 2
Pass
10
Not Allowed
10
Not Allowed
Pass
5
Not Allowed
D=(a+b) / 2