Philips 150S6FG-27 - Manual (Page 20)

Glossary
Glossary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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. Wide monitors or TVs have an aspect ratio of 16:9 or 16:10.
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B
Backlight
The light source for a transmissive LCD. There are two techniques used in nowaday LCD designs.
Most TFT LCD panels use CCFLs (cold cathode fluorescent light) and a diffuser panel directly
behind the liquid crystal layer. New technology using Light Emitting Drodes (LED) are still under
development.
Brightness
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