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Forming an image on the LCD pixel array
CRTs scan their phosphors point-by-point, from
left to right and top to bottom of the screen.
Therefore at any given time, only one point on
each R, G, and B phosphor will emit light. LCD
monitors, in contrast, do not use 'scanning' to
display pictures. The entire image or frame is
displayed on the screen at once for the full vertical
Formimg an image on a CRT
Figure 2-8.
About LCD response time
CRT phosphors emit light at the moment they are
hit by their electron beams, so the response time
of a CRT monitor has never become an issue.
With LCD monitors, however, the issue of
response time can be a concern. The response
time of an LCD is the time required to open (or
close) the pixel's aperture to the desired opening
from when the drive voltage was applied. Slow
LCD monitors - in summary
Since first used in simple numeric and character
displays, LCD technology has come a long way in
terms of picture quality, reliability, and cost. By
nature, LCD displays are also immune to the many
undesired effects unavoidable in CRT or Plasma
displays. This manual describes these in detail,
The basic mechanisms of display devices
frequency period. This difference is somewhat
similar to the difference between tube camera
imagers and CCDs - where tubes scan the
imaging plane point-by-point, as opposed to
CCDs, which capture the entire picture frame at
once.
CRT beams
Formimg an image on an LCD
response time in conventional or non-professional
LCD monitors can result in picture blur across
fast-moving objects.
The response time of the LUMA Series monitors is
extremely short due to the use of highly advanced
LCD technology. This makes them particularly
suitable for professional picture monitoring.
leading your understanding as to why LCD has
become the preferred choice for a majority of
professional video production applications.
LCD backlight
Product Information Manual Sony Professional LCD Monitor
11
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