Specifications; Pixel Defects On Tfts (Lcd-Displays) - Medion MD 31119 Bedienungsanleitung

Specifications

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Visible display size
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Input voltage
Power consumption
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Resolution
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Brightness
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Contrast
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Reaction time
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Viewing angle h CR > 10
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Viewing angle v CR > 10
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Viewing angle h CR > 5
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Viewing angle h CR > 5
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RGB input, analog
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User control
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Ambient Temperature
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Humidity

Pixel Defects on TFTs (LCD-Displays)

Active matrix TFTs (LCD) with a resolution of 1440 x 900 pixel (WSXGA), which are in turn composed of three
sub-pixels each (red, green, blue), contain about 3.9 million addressable transistors. Because of this very high
number of transistors and their extremely complex production process occasionally defective or incorrectly
addressed pixels or sub-pixels may occur.
There have been several attempts in the past to define the acceptable number of defective pixels. But this can be
difficult and varies widely between different manufacturers.
MEDION, therefore, adheres to the clear and strict requirements of ISO
13406-2, class II, for the warranty handling of all TFT display products.
These requirements are summarized below.
Within ISO-standard 13406-2 the general requirements regarding pixel defects
are defined. Pixel defects are classified into three failure types and four failure
classes. Each individual pixel is made up of three sub-pixels in the primary
colors (red, green, blue).
Types of Pixel Failures:
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Type 1:
A constantly lit pixel (a bright, white spot), even though it is not addressed
A white pixel is caused when all three sub-pixel are lit.
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Type 2:
A pixel that does not light up (dark, black spot), although it is addressed
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Type 3:
Abnormal or defective red, green or blue sub-pixels.
(E.g. constantly lit with half the brightness, one color is not shining, blinking or flickering, but not
belonging to Type 1 or 2 Pixel Failures)
In addition: A cluster of type 3 (= 2 or more defective sub-pixels in an array of 5 x 5 pixel). A cluster is an array
of 5 x 5 pixel (15 x 5 sub-pixel).
19" (48.2 cm), TFT
AC 100-240 V ~ 50/60 Hz
1.2 A
max. 40 Watt
max. 1440 x 900
2
300 cd/m (typ.)
1000:1 (typ.)
5ms (typ.)
80°/80° (typ.)
80°/80° (typ.)
89°/89° (typ.)
89°/89° (typ.)
15-wired SUB-D connector
OSD
Operating +41°F ~ +95°F
+5° C ~ +35°C
Storage -4°F ~ +140°F
-20° C ~ +60°C
Operating < 80%
Storage < 95%
Specifications
Rows
Blue
Green
Red
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