Patent ID: 6144357
Filing Date: 2000-11-07
Classification: G09G,H02M

Abstract:
A driving circuit for generating driving voltages of a liquid crystal display having a plurality of thin film transistors, each of which includes a source, a drain, and a gate, comprising:a switching part of generating first to fourth control signals which swing between a first power voltage and a second power voltage using first to fourth input logic control signals;a driving voltage generating part controlled by the first to fourth control signals, for generating gate on and off voltages for turning on and off the thin film transistors by raising said second power voltage to a voltage in a first range of voltages and dropping said first power voltage to a voltage in a second range of voltages, wherein said first range of voltages is completely dissimilar to said second range of voltages; anda voltage maintenance part for maintaining said gate on and off voltages inputted from said driving voltage generating part at selected voltage levels.