Working with the Tablet PC
Touchscreen
Touchscreen
Notes
High-quality LCD screens (TFT) are installed in Fujitsu Tablet PCs. For technical reasons,
these screens are manufactured for a speci
fi
c resolution. An optimal, clear picture can
only be ensured in the resolution intended for the particular screen. A screen resolution
which differs from the speci
fi
cation can result in an unclear picture.
The screen resolution of your Tablet PC’s touchscreen is optimally set at the factory.
Current production technology cannot guarantee an absolutely fault-free screen display. A few
isolated constantly lit or unlit pixels (picture elements) may be present. The maximum permitted
number of such faulty pixels is speci
fi
ed in the international standard ISO 9241-307 (Class II).
Example:
A screen with a resolution of 1280 x 800 has 1280 x 800 = 1024000 pixels. Each pixel consists of
three subpixels (red, green and blue), so there are almost 3 million subpixels in total. According to ISO
9241-307 (class II), a maximum of 2 light and 2 dark pixels and in addition 5 light or 10 dark subpixels
or an equivalent mix (1 light subpixel counts as 2 dark subpixels) are allowed to be defective.
Pixel
A pixel consists of 3 subpixels, normally red, green and
blue. A pixel is the smallest element that can be generated
by complete functionality of the display.
Subpixel
A subpixel is a separately addressable internal structure
within a pixel that enhances the pixel function.
Cluster
A cluster contains two or more defective pixels or
subpixels in a 5 x 5 pixel block.
Background lighting
LCD screens are operated with background lighting. The luminosity of the background
lighting can decrease over the period of use of the Tablet PC. However, you
can set the brightness of your screen yourself.
Ambient light sensor
If your Tablet PC was shipped with the
Windows
operating system, the screen brightness is
regulated by means of the ambient light sensor and depending on the respective light conditions.
This results in optimum readability and longer battery life at the same time.
If your Tablet PC was shipped with Windows 8.1, the adaptive brightness setting is deactivated. To
change the ambient light sensor settings, select
Control Panel - System and Security - Power Options -
Change plan settings - Change advanced power settings - Display - Activate adaptive brightness setting.
.
Select
On
to activate the adaptive brightness setting with the help of the ambient light sensor.
Synchronizing the display on the touchscreen and an external monitor
In Windows 8.1 wipe your
fi
nger over the screen from the right-hand edge. The setting
Charms - Devices - Second monitor
opens. Select the desired output type.
You can also use the
Fujitsu Display Manager
in the
Windows Mobility Center
to set the output type.
Fujitsu
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