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from one plane of the display to the other). All passive direct drive,
active matrix, and most passive low level (x2 to x32) multiplexed LCDs have a 90° twist.
The basic Twisted Nematic (TN) LCD consists of a layer of liquid
crystal material supported by two glass plates. The liquid
crystal material is a mixture of long, cylindrically shaped
molecules with different electrical and optical properties, depending on direction.
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