NEC Multi Sync EA221WM, Service Manual

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5-9
Polarizer Defects
Items Criteria
Scratches Linear 0.05 ≤ W ≤ 0.1, 0.3 ≤ L ≤ 3.0, N ≤ 2
Dent Circular 0.2 ≤ D ≤ 0.4, N ≤ 2
W : Width
L : Length
D :Average diameter –(a+b)/2
Note)
e. Average
Diameter
f. Linear : a>2b, Circular : a ≤ 2b
g. Extraneous substances which can be wiped out, like Finger Print, Particles, are not considered as a defect.
h. Defects which is on the Black Matrix(outside of Active Area) are not considered as a defect.
Foreign Material
Items Criteria
Linear 0.05 ≤ W ≤ 0.1, 0.3 ≤ L ≤ 2.5, N ≤ 3 Foreign Material
Circular 0.2 ≤ D ≤ 0.4, N ≤ 3
W : Width
L : Length
D : Average diameter –(a+b)/2
Note)
c. Average
Diameter
d. Linear : a>2b, Circular : a ≤ 2b
Line Defect
All kinds of line defects such as vertical, horizontal or cross are not allowed.
Bezel Appearance
Scratches, minor bents, stains, particles on the Bezel frame are not considered as a defect.
Others
Issues which is not defined in this criteria shall be discussed with both parties, Customer and Supplier, for better
solution.