Working w ith the notebook
LCD screen
LCDscreenNotes
High-quality LCD screens (TFT) are installed in Fujitsu notebooks. Fo r 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 s pec ification can result in an unclear image.
The resolution of your notebook’s scre en is set to the optimum at the factory.
Current production technology cannot guarantee an absolutely fault-free screen display. A
few isolated constantly lit or unlit pixels may b e present. The maximum permitted number of
faulty pixels is stipulated in the interna tional standard ISO 9241-307 (Class 4).
Example:
A screen with a resolution of 1280 x 800 has 1280 x 800 = 1024000 pixe ls. Each pixel consists of
three subpixels (red, green and blue), so there are almost 3 million subpixels in total. Acco rding to ISO
9241-307 ( class 4), a m aximum 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 defect ive.
Pixel
A pixel consists of 3
subpixels, normally red, green and
blue. A pixel is the s
mallest e lement that can be generated
by complete functi
onality of the display.
Subpixel
A subpixel is a sep
arately addressable internal structure
within a pix el tha
t enhances the pixel function.
Cluster A cluster contains two or more defective pixels or
subpixels in a 5 x 5 pixel block.
Background l i
ghting
LCD screens ar
e operated with background lighting. Th e lum inosity of the background
lighting can
decrease du ring the period of use o f the notebook. However, you
can set the br
ightness of y our screen individually.
Synchronis
ing the display on the LCD s creen and a n external monitor
For more in
formation, please refer to the chapter "
Key combinations", Page 23
under "Dis
play output, switch between".
Fujitsu 27
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