LCoS TV Display

HDTV Guides Edition 6 - LCoS HDTV Display

Today we briefly talk about the LCoS TV Display basics.

The LCoS architecture borrows from DLP TV displays, which uses microscopic mirrors to direct light. Similar to projection, direct view and LCD TVs, LCoS uses tiny liquid crystals to create the colored pixels that make up the TV’s onscreen display. In an LCoS system, the crystal layer sits on top of a reflective mirror substrate. Instead of shining a backlight directly through the LCD layer, light is bounced off the mirror behind the liquid crystal. When an electrical charge is applied to a cell filled with the liquid crystals, the crystal's state is modified to allow or block light – turning the pixel on or off.

Some advantages of LCoS technology:

A) . The matrix lines that separate individual pixels are thinner, eliminating the “screen door” effect of black lines appearing between pixels unlike the LCD TVs on the market today.

B). No moving parts – no pivoting micro-mirrors or spinning color wheels. The color wheels is the culprit behind the “rainbow effect” artifacts that bother some DLP viewers... not me though.