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Technology Code ID) Reference Information 5-3
Table 5-1. TFT LCD Guidelines (14.1/15.0-in XGA)
Type of Imperfection Imperfections Not Allowed
Electrical Imperfections:
Bright dots
(a)
Dark dots
(a)
• 7 or more single bright dots.
• 7 or more single dark dots.
• 9 or more total (bright and dark combined) defective dots.
• Any occurrence of multiple defective dots within 15 mm.
Mechanical Imperfections:
Discoloration
Polarizer bubbles, dents
(b)
• Any polarizer bubble, discoloration, or dent that is visible from at least
36 cm (14 in).
Definitions of imperfections:
a
A bright or dark dot is a subpixel (red, green, or blue dot) that is stuck on or off.
b
A polarizer dent or bubble is a light spot with a darker border that appears on a lighted display and does
not change size. In contrast, a polarizer scratch is a light line that is visible on a darker background and
does not change size.