Touchscreen - Fujitsu LIFEBOOK U939X Operating Manual

Working with the notebook

Touchscreen

Notes LCDscreen
Information on screen resolution can be found in the section
for integrated screen and external screens", Page
High-quality LCD screens (TFT) are installed in Fujitsu notebooks. For technical reasons,
these screens are manufactured for a particular resolution. An optimum and sharp image can
only be ensured with the resolution intended for the particular screen. A screen resolution
which differs from the specification can result in an unclear image.
The resolution of your notebook's screen is set to the optimum at the factory.
With the present standards of production technology, absolutely flawless screen images
cannot be guaranteed. There may be a few constantly light or dark pixels (picture
elements) on the screen. The maximum permitted number of such faulty pixels is
specified in the international standard ISO 9241-307 (Class II).
Example:
A monitor with HD resolution 1366 x 768 has 1366 x 768 = 1049088 pixels. Each pixel consists of
three subpixels (red, green and blue), making a total of about 3 million subpixels. 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
Subpixel
Cluster
Background lighting
LCD screens are operated with background lighting. The luminosity of the background
lighting can decrease during the period of use of the notebook. However, you
can set the brightness of your screen individually.
Synchronising the display on the LCD screen and an external monitor
For more information, please refer to the chapter
under "Display output, switch between".
30
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.
A subpixel is a separately addressable internal structure
within a pixel that enhances the pixel function.
A cluster contains two or more defective pixels or
subpixels in a 5 x 5 pixel block.
"Key combinations", Page 41
"Screen resolutions
91.
Fujitsu