Each pixel is made up of three liquid crystal cells,
each with a colored filter??”one each for red, green, and blue. Fluorescent lights or
white LEDs placed behind the LCD panel provide illumination.
LCDs use less power and space than CRTs, but have a narrower range of acceptable
viewing angles, may wash out in bright light, and typically have a less durable front
surface than CRTs. Some graphic artists prefer CRTs, claiming that they reproduce a
wider range of colors with greater accuracy.
To display images of different resolutions on a CRT, the width of the electron beams
is changed, making the pixels larger or smaller. On an LCD, each pixel has a defined
location and size, so using a resolution other than the ???native??? resolution of the display
requires some hardware pixels to show a blended color representing a portion of
two or more pixels from the image. This results in an undesirable blurring, softening,
or blocky presentation of the image, so it is always best to run an LCD at its
native resolution.
1.10
1.10 Display Hardware 15
Other flat-panel technologies
Other flat-panel technologies available include:
Plasma displays
These use charged gases to produce an image that is bright and that can be very
large, but that has a high power consumption and whose brightness diminishes
over time, so this type of display??™s market share is diminishing as large-format
LCD manufacturing becomes feasible.
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