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Glossary
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A
Active matrix
This is a kind of liquid crystal display structure in which switching transistors are attached
to each pixel to control the on/off voltage. It produces a brighter and sharper display with a
broader viewing angle than a passive matrix display. Also refer to TFT (thin film transistor).
Amorphous silicon (a-Si)
A semiconductor material that is used to make the thin film transistors (TFTs) layer of an
active matrix LCD.
Aspect ratio
The width-to-height ratio of the active area of a display. In general, most monitors have an
aspect ratio of 4:3 or 5:4. Wide monitors or TVs have an aspect ratio of 16:9 or 16:10.
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B
Brightness
The dimension of color that is referred to an achromatic scale, ranging from black to white,
also called lightness or luminous reflectance. Because of confusion with saturation, the use
of this term should be discouraged.
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C
CCFL(cold cathode fluorescent light)