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Abstract
Display technology based on liquid crystal on silicon (LCOS) offers a slimmer, lighter and more cost-effective alternative to cathode ray tubes (CRTs) and better resolution than transmissive liquid crystal display (LCD) panels. LCOS technology combines the supreme picture quality of LCDs (good brightness, contrast and color saturation) with the manufacturing efficiencies and economies of scale of silicon fabs. The active substrate, which integrates drivers and other functions on the chip, is manufactured using existing semiconductor lines. Whole silicon wafers are mated with glass substrates and then diced into individual display chips, using standard semiconductor manufacturing equipment. Using silicon as the active-matrix substrate also allows for significant integration. The LCOS platform is a completely digital solution with fully integrated row and column drivers. Digital signals are converted internally, essentially at the pixel, into analog driving voltages to eliminate any artifacts common to bit sequential techniques used to obtain individual gray levels.