Whats the difference between LCD, LCoS, DLP and CRT rear-projection TVs?
The differences in the types of rear-projection TV’s all relate to the different ways that these TV’s project the image onto the screen. • CRT Rear Projection has three cathode ray tubes in the TV set, one for each of the primary video colours, red, green and blue. • Digital Light Processing (DLP) rear projection uses a DMD (Digital Micromirror Device) chip with thousands of tiny mirrors to reflect coloured light. Each mirror on the chip represents one pixel in the final image. Projecting this image through a lens produces the picture on the screen. • LCD Rear Projection passes a light through a Liquid Crystal Display (LCD) chip which contains video pixels that are magnified through a lens and then projected onto the screen. • LCoS (Liquid Crystal on Silicon) rear projection TV is a variant of LCD Rear Projection technology.
