Active matrix  From Wikipedia, the free encyclopedia Jump to:
navigation, search  Active matrix is a type of addressing scheme
used in flat panel displays. In this method of switching
individual elements (pixels) of a flat panel display, each pixel
is attached to a transistor and capacitor which actively
maintain the pixel state while other pixels are being addressed.
This is to be contrasted with the older passive matrix
technology in which each pixel must maintain its state
passively, without being driven by circuitry.  The active matrix
technology was invented by Bernard J. Lechner at RCA and first
demonstrated as a feasible device using thin-film transistors by
Hungarian émigré T. Peter Brody and his Thin-Film Devices
department at Westinghouse Electric Corporation in 1974,[1] and
the term was introduced into the literature in 1975.[2][3][4]
Given an m × n matrix, the number of connectors needed to
address the display is m + n (just like in passive matrix
technology). Each pixel is attached to a switch-d