10.11
Cosmetic specification
10.11.1
Inspection conditions
Ambient illumination
300-700 Lux
Ambient temperature
20 - 25°C
Ambient humidity
65 ± 5 %
Viewing distance
minimum 4x height of panel
One display pixel contains three subpixels or dots (red, green, and blue).
10.11.2
Definition of dot defect
If the luminance of a dot is brighter or darker than the surrounding dots, this is called a dot defect.
Bright dot
Dots (subpixels) which appear brightly in the screen when displaying a dark pattern
Dark dot
Dots (subpixelx) which appear darkly in the screen when displaying a bright pattern
Dots smaller than half a subpixel are not counted as defect dots.
The dot defect is inspected on red, green, blue, white or black pattern.
Defects which are outside the active area are not considered as defect.
Dot Defect Type
Max
Bright dot
Random
3
Adjacent 2 dots
1
Dark dot
Random
7
Off dot
Random
10
Adjacent 2 dots
2
Adjacent 3 dots
1
Total amount of dots
15
Minimum distance between defects
Bright dot - bright dot
5 mm
Dark dot - dark dot
Ignore
10.11.3
Dot classification method
The criteria of dot is defined by its brightness as below:
Comparison of brightly visible dot with background
•
Step 1
Detect bright dots at 0% gray level (black background). If any dots are visible, go to 25% gray level.
•
Step 2
At 25% gray level:
- If the dot is no longer visible, it does not count;
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Barco - KVD5521, IVD5521, HVD5521 - R591341 - User Manual - Revision 05 - November 2016
