A fast and compact analog buffer design for active matrix liquid crystal displays using polysilicon thin-film transistors

This paper presents a new source-follower type analog buffer for active-matrix liquid crystal displays applications, which exhibits high immunity to the threshold voltage variations of the polysilicon (poly-Si) thin-film transistors (TFTs). The functionality of the buffer was verified through simulations. In order for the simulations to be realistic, parameters extraction from fabricated poly-Si TFTs were used. Index Terms--Active-matrix liquid crystal displays (AMLCDs), analog buffer, column driver, low-temperature (LT) polysilicon (poly-Si) thin-film transistors (TFTs), pixel array.