EYE-LCD-1700/2100-HB-BC
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9.
EVALUATION OF VISUAL RANGE
9.1 Failure of Pixel
A image point (Pixel) consist 3 sub pixel with basic colour red, green and blue. The physical dimension of pixel
(also called pixel pitch) differs depending on the model (look at the data sheet for more information). If a
pixel failure is larger than 1/2 pixel, it counts as pixel failure according to definition. 3 kinds of pixel failures are
differentiated:
)
Permanently bright pixel.
The bright pixel is permanently and with constant size at black testing image.
)
Permanent dark pixel.
The pixel appears permanently dark and constant size at red, green and blue testing image.
)
Two pixels lying next to each other.
Two directly bordering pixels show a defect.
)
Acceptable number of dot defects according to ISO 9241 for Class II (see table „Overview Total Number of
Dot Defects“).
9.2 Pollutions
By the production process and handling of the displays occurs kinds of pollution in range of vision. It can
concern inclusions, blistering, depressions, marks, scratch or another. The following tolerance limits is specified:
KIND OF POLLUTION
CRITICAL VALUE
Inclusions / Marks
0,5 < D ≤ 1,2mm, N ≤ 16
Scratch / Lints
0,15 < W ≤ 0,25mm, 0,3 < L ≤ 10,0mm, N ≤ 10
Depressions / Blistering
0,3 < D ≤ 1,2mm, N = 16
