Acer X34GS Lifecycle Extension Manual page 18

1.4.5 Defects:
1.4.5.1 Visual Inspection:
The LCD panel shall be inspected with all pixels set to white, black, red, green and blue. The color
variation, brightness variation, and overall appearance must meet the SPEC.
1.4.5.2 Display Degradation:
Over the life of the product, variation of the parameters specified in Panel specification shall be
maintained within reasonable limits. The panel must not exhibit any significant defects while in
operation. This does not in any way change the warranty given by the panel manufacturer.
1.4.5.3 Light Leakage:
Except for the active display area, there shall be no light emission visible from any angle from any
other part of the display. For this test, the ambient illumination will follow the panel specification 300
to 700 lux.
1.4.5.4 Allowable Defects:
No cosmetic defects are allowed except those specified below. The conditions of visual inspections
are as follows:
- Viewing distance: 35~50cm.
- Ambient illumination: 300 to 700 lux.
- Viewing angle range shall
- Defects not apparent within one minute shall be ignored.
1.4.5.5 Defect Terminology:
Dark Spots / Lines: Spots or lines that appear dark in the display patterns and are usually the result of
contamination. Defects do not vary in size or intensity (contrast) when contrast voltage is varied.
Contrast variation can be achieved through the use of varying gray shade patterns.
Bright Spots / Lines: Spots or lines that appears light in the display patterns. Defects do not vary in
size or intensity (contrast) when contrast voltage is varied. Contrast variation can be achieved
through the use of varying gray shade patterns.
Polarizer Scratch: When the unit lights, lines appear light (white) with display patterns dark and do
not vary in size. Physical damage to the polarizer does not damage the glass.
Polarizer Dent: When the unit lights, spots appear light (white) with display patterns dark and do not
vary in size. Physical damage to the polarizer does not damage the glass.
Bright/Dark Dot: A sub - pixel (R, G, B dot) stuck off / on (electrical).
1.4.5.6 LCD Inspection method:
All inspection should follow the IIS agreed between acer and Lehui/LGD.
be 90 degrees Horizontal and 65 degrees vertical typically.
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