A gray-scale addressing technique for thin-film-transistor/liquid crystal displays

An addressing technique aliowing continuoustone color images to be rendered on thin-fllm-transistor/ilquid crystal displays having bilevel drivers Is described. The technique uses multiple subflelds per frame, with driver voltages changed synchronously with the field data. By using N bits of data per pixel, excitation Is applied to the display one bit-plane per field for N consecutive fields. The technique Is analyzed, Its benefits and limitations discussed, and experimental results presented. Up to 16 gray levels have been demonstrated with good Image quality.