Philips 200WP7 User Manual page 10

FAQs (Frequently Asked Questions)
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Q:
What can I do if my USB peripherals don't work with the USB hub of my monitor?
A:
If you experience the problem, just detach and re-attach the USB hub cable
between PC and your monitor, then refresh your PC device manager (Start > Setting
> Control panel > System > Hardware > Device manager > Refresh) or reboot your
PC and the problem can be solved by above procedures.
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LCD Panel Technology
Q:
What is a Liquid Crystal Display?
A: A Liquid Crystal Display (LCD) is an optical device that is commonly used to
display ASCII characters and images on digital items such as watches, calculators,
portable game consoles, etc. LCD is the technology used for displays in notebooks
and other small computers. Like light-emitting diode and gas-plasma technologies,
LCD allows displays to be much thinner than cathode ray tube (CRT) technology.
LCD consumes much less power than LED and gas-displays because it works on the
principle of blocking light rather than emitting it.
Q: What differentiates passive matrix LCDs from active matrix LCDs?
A: An LCD is made with either a passive matrix or an active matrix display grid. An
active matrix has a transistor located at each pixel intersection, requiring less current
to control the luminance of a pixel. For this reason, the current in an active matrix
display can be switched on and off more frequently, improving the screen refresh time
(your mouse pointer will appear to move more smoothly across the screen, for
example). The passive matrix LCD has a grid of conductors with pixels located at
each intersection in the grid.
Q:
What are the advantages of TFT LCD compared with CRT?
A:
In a CRT monitor, a gun shoots electrons and general light by colliding polarized
electrons on fluorescent glass. Therefore, CRT monitors basically operate with an
analog RGB signal. A TFT LCD monitor is a device that displays an input image by
operating a liquid crystal panel. The TFT has a fundamentally different structure than
a CRT: Each cell has an active matrix structure and independent active elements. A