Multimedia projector using 720 × 480 pixel a-Si TFT-LCDs and a high-speed analogue driver LSI

Abstract An active-matrix a-Si thin-film transistor liquid-crystal display (TFT-LCD) with 720 × 480 pixel resolution has been developed as a projector, enabling the display of sharp images on extended definition TV (EDTV) and computer monitors that support a full range of multimedia applications. To enhance picture quality, an LC transmission-voltage (T-V) correction circuit has been developed that incorporates a nonlinear video signal amplifier based on curve-fitting. To extend the panel's capabilities so that it can project images on computer display monitors, a ew drive circuits have been developed that incorporate 8-MHz analogue driver LSIs and sample-and-hold circuits.