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Active Area
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The Active Area is the dimensions (length by height) of the conductive area in LCD glass.
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Active Matrix LCD
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An Active Matrix LCD contains Thin Film Transistors (TFT), a type of LCD flat-panel display screen in which each pixel is controlled by one to four transistors. These screens have relatively large viewing angles, faster response and more colour saturation.
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A/D Converter
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Analogue to Digital (A/D) Converters are used with LCD monitors with an analogue interface. The analogue signal is converted into a digital signal for display on an LCD panel. LCD monitors with only a digital interface require a dedicated graphics adapter and connectors, which come in varied formats.
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Aliasing
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Aliasing refers to visual effects showing jagged edges (jaggies) in text, icons and graphic objects. Anti-aliasing refers to software compensation that minimizes this effect.
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Aperture Ratio
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The Aperture Ratio is the light transmitting area of a pixel divided by its screen area (subpixel pitch x row pitch / screen area).
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Aspect Ratio
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The Aspect Ratio is the ratio between the width and the height of a frame or a screen. Many flat displays have ratios of 4:3 including VGA (640x480), SVGA (800x600), XGA (1026x768), UXGA (1600x1200). Other panels have different ratios such as the 5:4 ratio of SXGA (1280x1024).
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ASTN
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Automobile Rated Super Twisted Numatic (ASTN) features include: negative mode transmissive and transflective mode; high reliability; no colour change vs temperature; no colour change vs viewing angle colour; neutral automotive specification (-30°C to +85°C). See also FSTN.
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