FAQs (Frequently Asked Questions)
to give a wider viewing angle.
Q:
Why is there no flicker on an LCD Monitor?
A:
Technically speaking, LCDs do flicker, but the cause of the phenomenon is different
from that of a CRT monitor -- and it has no impact of the ease of viewing. Flickering in an
LCD monitor relates to usually undetectable luminance caused by the difference between
positive and negative voltage. On the other hand, CRT flickering that can irritate the
human eye occurs when the on/off action of the fluorescent object becomes visible.
Since the reaction speed of liquid crystal in an LCD panel is much slower, this
troublesome form of flickering is not present in an LCD display.
Q:
Why is an LCD monitor virtually low of Electro Magnetic Interference?
A:
Unlike a CRT, an LCD monitor does not have key parts that generate Electro
Magnetic Interference, especially magnetic fields. Also, since an LCD display utilizes
relatively low power, its power supply is extremely quiet.
Ergonomics, Ecology and Safety Standards
Q:
What is the CE mark?
A:
The CE (Conformité Européenne) mark is required to be displayed on all regulated
products offered for sale on the European market. This 'CE' mark means that a product
complies with the relevant European Directive. A European Directive is a European 'Law'
that relates to health, safety, environment and consumer protection, much the same as
the U.S. National Electrical Code and UL Standards.
Q:
Does the LCD monitor conform to general safety standards?
A:
Yes. Philips LCD monitors conform to the guidelines of MPR-II and TCO 99/03
standards for the control of radiation, electromagnetic waves, energy reduction, electrical
safety in the work environment and recyclability. The specification page provides detailed
data on safety standards.
More information is provided in the
file:///H|/OEM MODELS/Philips 2008/CD MANUAL/190SW9 EDFU/190SW9 EDFU/lcd/manual/ENGLISH/190S9/safety/saf_faq.htm 第 7 頁 / 共 8 [2008/5/29 上午 11:35:14]
