HP OmniBook 900 Service Manual page 94

Type of Imperfection
Unipac 13" TFT, XGA
Electrical Imperfections:
(a)
Bright dots
(a)
Dark dots
Mechanical Imperfections:
(b)
Spots
(c)
Lines
(d)
Polarizer scratches
Polarizer dents, bubbles
Definitions of imperfections:
a
Bright or dark dot: A subpixel (red, green, or blue dot) that is stuck on or off.
b
Spot: A point on the display that appears dark or bright and does not change in size. Caused by foreign
circular matter on the backlight.
c
Line: A line on the display that appears dark or light and does not change in size. Caused by
contamination (lint, hair) behind the display.
d
Polarizer scratch: A light line that is visible on a darker background and does not change in size.
e
Polarizer dent or bubble: A light spot with a darker border that appears on a lighted display and does not
change in size.
5-4 Reference Information
Imperfections Not Allowed
9 or more single bright dots.
10 or more single dark dots.
18 or more total bright and dark dots.
4 or more double bright dots.
5 or more double dark dots.
Any occurrence of triple bright dots (or triple dark dots).
Any occurrence of 2 bright dots within 15 mm.
Any occurrence of 2 dark dots within 5 mm.
5 or more spots 0-0.5 mm avg. dia.
4 or more lines 0-3 mm long.
7 or more scratches 0-30 mm long.
7 or more dents 0-0.5 mm avg. dia.
(e)
Any spot or dent over 0.5 mm avg. dia.
Any line over 3 mm long.
Any scratch over 30 mm long
HP OmniBook 900