Philips 170X6 User Manual page 35

Glossary
N
Nit
A unit of luminance equal to 1 cd/m2 or 0.292 ftL.
P
Pixel
PICture Element; the smallest element on a computerized CRT or LCD image, and hence a display.
Polarizer
A light filter which only allows light waves of a certain rotation through. Polarized material with
perpendicular filtering is used in LCDs to enclose the liquid crystal. The liquid crystal is then used
as the medium which twists the light waves 90° in order to allow the light to pass through or not.
R
Refresh rate
The number of times per second the screen is refreshed or redrawn. This number is usually stated
in Hz (Hertz) or cycles per second. A rate of 60 Hz is equal to 60 tomes per second.
Response Time
Response time is the period required for a liquid crystal cell to go from active (black) to inactive
(white) and back to active (black) again. It is measured in milliseconds. Faster is better: Lower
response time means faster transitions and, therefore, results in fewer visible image artifacts in the
display of fast-moving images.
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