Sony VAIO PCG-9312 User Manual page 19

VAIO Notebook User Guide
Do not scratch the LCD or exert pressure on it. This could cause
malfunction.
Using the computer in low temperature conditions may produce a residual
image on the screen. This is not a malfunction. When the computer returns to
normal temperature, the screen returns to normal.
The screen becomes warm during operation. This is normal and does not
indicate a malfunction.
The LCD is manufactured using high-precision technology. You may,
however, see tiny black points and/or bright points (red, blue, or green) that
continuously appear on the LCD. This is a normal result of the
manufacturing process and does not indicate a malfunction.
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