small screens on newer airplanes

From:         tthuang@patmos.CS.Berkeley.EDU (Timothy T. Huang)
Date:         30 Aug 95 14:12:46 
Organization: University of California, Berkeley
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Does anyone know what kind of technology is used in the small fold-down
screens in some of the newer airplanes? The image quality is good enough
that it seems like active-matrix screens, but I'm surprised that the
airplane companies can put so many screens in the plane without
significantly increasing the cost of the plane.