Working with the Table t PC
Touchscreen
Tou ch s cr e enNotes
High-quality TFT displays are installed in Tablet PCs from Fujitsu Technology Solutions GmbH. Fo r
technical reasons, TFT monitors are man ufactured for a specific resolution. An optimal, clear
picture can only be ensured w ith the correct resolution intended fo r the relevant TF T monitor. A
monitor resolution which differs from the specification can result in an un clear picture.
The screen resolution of your Tablet PC’s touchscreen is optimally set at the factory.
The standard of production techniques tod ay cannot guarantee an absolutely fault-free screen
display. A few isolated constant lit or unlit pixels (p icture elements) may be present. The maximum
permitted number of pixels faults is stipulated in the international standard ISO 9241-3 (Class II).
Example:
A monitor with a reso lution 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 to tal. According to
ISO 9241-3 (class II), a maximum of 2 light and 2 dark pixels and an additional 5 light or 10 dark
subpixels or a corresponding mix ma y be defective (1 light subpixel coun ts as 2 dark subpixels).
Pixel
A pixel consists of 3 subpixels, normally r ed, green a nd
blue. A pixel is the smallest element that can be generated
by complete functionality of the display.
Subpixel
A s ubpixel is a separately ad dressable internal structure
within a pixel t hat 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 lighting
TFT monitors are operated with background lighting. T he luminosity of the
background lighting c an decrease w hile the Tablet PC is in use. However, you
can set the brightness of y our monitor individually.
Synchronising the display on the touchscreen and a n external monitor
In Windows 7, you can switch between to uchscreen and external monitor, if you open
Control P an el - Windows Mob ility Center,sectionExternal Display.
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