Operation Manual

Working with the Tablet PC

Touch screen

Tou chs cr ee nNotes

High-quality LCD screens (TFT) are installed in Fujitsu Tablet PCs. For technical reasons,

these screens are manufactured for a certain resolution. An optimum and sharp image can

only be ensured with the resolution intende d for the particular screen. A screen resolution

which differs from the sp e ciﬁcation can result in an unclear 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 such faulty pixels is speciﬁed 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 almo st 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 da rk subpixe ls

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 you r Tablet PC was shipped with the Windows operating system, the screen brightness

is regulated by the ambient light sensor according to 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 disabled. To

change the ambient light sensor settings, select Control Panel - System and Security - Power Options -

Change plan settings - Change advanced power settings - Display - Activate adap tive 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.

22 Fujitsu