User manual

Working with the Tablet PC
Touchscreen
Tou chs cr ee nNotes
High-quality LCD screens (TFT) are installed in Fujitsu Tablet PCs. For technical reasons,
these screens are manuf actured for a specific resolution. An optimum and focuse d image can
only be ensured with the resolution intende d for the particular screen. A screen resolution
which differs from the specification can r esult in an unfocused image.
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 (pictu re elements) may be present. The maximum permitted
number of faulty pixels is stipulated in the international standard ISO 9241-307 (Class 2).
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 almo st 3 million subpixels in total. According to ISO
9241-307 (class 2), a maximum of 2 light and 2 dark pixe ls and in addition 5 light or 10 dark subpixels
or an equivalent mix (1 light subpixel counts as 2 d ark 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 contain
s two or more defective p ixels or
subpixels in a 5 x
5 pixel b lock.
Background light ing
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, yo u can
set the brightness of your screen individually.
Ambient light senso r
If your notebook was shipped with the Windows operating syste m, the screen brightness is
regulated by means of the ambient light sensor and depending o n the respective light conditions.
This results in opt imum readability and longer battery life at the same time.
If your device was shipped with Windows 8.1, the adaptive brightness setting is disabled. To change
the ambient light sensor settings, select Control Panel - System and Security - Power Options - Change
plan settings - Cha nge advanced power options - D isplay - Enable adaptive brightness setting..
Select On to activate the adaptive brightness setting with the help o f the ambient light sensor.
Synchronising the display on the touchscreen and an external monitor
In Windows 8.1 wipe your finger over the s creen from the right-hand edge. The setting
Charms - Devices - Second screen opens. Select the desired output type.
You can also use the Fujitsu Display Manager in the Windows Mobility Center to set the output type.
24 Fujitsu