User's Manual

Working with the Tablet PC
Touchscreen
Tou chs cr eenNotes
High-quality LCD screens (TFT) are installed in F ujitsu Tablet PCs. For technical reason s,
these screens are manufactured for a specific resolution. An optimal, clear picture can
only be ensured in the resolution intended for the particular screen. A s creen resolution
which differs from the specification can r esult in an unclear picture.
The screen resolution of your Tablet PC’s touchscreen is optima lly set at the factory.
Current p roduction 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 specified in the inte rnational standard ISO 9241-307 (Class 2).
Example:
A monitor with a resolution of 1,280 x 800 has 1,280 x 800 = 1,024,000 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 2), a m a ximum of 2 light a nd 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 de fect ive.
Pixel
A pixel consists of 3 subpixels, norma lly red, green and
blue. A pixel is the smallest e lemen t 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 pixels or
subpixels in a 5 x
5 pixel block.
Background l igh ting
LCD screens are operated with background lighting. The luminosity of the background
lighting ca n decrease over the period of use of the Tablet PC. However, you can
adjust the brightness of your monitor yourself.
Ambient light senso r
If your Tablet PC was shipped with the Windows operating system, the screen brightness
is regulated by the ambient light sensor and is dependent on the particular 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 - Cha n ge a dvanced power settings - Display - Activate a d ap tive brightness settin g..
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 monito r
In Windows 7, you can switch between touchscreen and external monitor, if you open
Control Panel - Windows Mobility Center, section E xtern al Display.
In W indows 8.1 wipe your finger over the screen from the right-hand edge. T he setting
Charms - Devices - Second monitor opens. Select the desired output type.
You can also use the Fujitsu Displa y Ma n ag er in the Windows Mobility Center to set the output type.
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