Open AccessHigh‐speed column‐line driving with polarity switch‐embedded output buffer amplifiers for TFT‐LCD application
Author(s) -
An C.H.,
Ko J.H.,
Kim H.R.,
Kong B.S.
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2014.3304
Subject(s) - amplifier , multiplexer , settling time , polarity (international relations) , transistor , transistor array , column (typography) , buffer amplifier , buffer (optical fiber) , thin film transistor , line (geometry) , voltage , cmos , computer science , electrical engineering , materials science , electronic engineering , optoelectronics , engineering , multiplexing , chemistry , telecommunications , mathematics , nanotechnology , step response , cell , biochemistry , layer (electronics) , frame (networking) , control engineering , geometry
A novel high‐speed column‐line driving scheme having output buffer amplifiers embedded with polarity multiplexer switches is proposed for use in large‐sized thin‐film transistor liquid‐crystal displays. The proposed driving scheme does not have explicit output‐polarity switches, resulting in lower settling time. Experimental results in a 1.2 μm 13.5 V CMOS process indicated that using the proposed driving scheme the settling times to reach 99% of target voltages for the dot and column inversions were improved by up to 48.6%. This driving scheme can be applied to class AB‐ or class B‐type amplifiers for liquid‐crystal display column drivers and output buffers controlled by output switches.