Thin-film transistor circuit

摘要

A thin-film transistor circuit used to drive a liquid crystal display device is disclosed, which circuit includes a plurality of circuit components which are arranged in the form of a matrix as to be connected with data lines for supplying an image signal and with address lines for supplying a gate pulse signal, whereby the circuit components control the picture element display in the unit picture element region of the LCD device. Each circuit component has a capacitor connected to the unit picture element region for temporarily storing the image signal, and a TFT transfer gate having a gate electrode connected to one of the address lines, a source electrode connected to one of the data lines, and a drain electrode connected to the capacitor. The transfer gate performs the switching operation in response to the gate pulse signal, thereby transferring the image signal to the capacitor. A compensating pulse signal which is synchronized with the gate pulse signal and has a polarity opposite to that of the gate pulse signal is applied to the capacitor, thereby preventing a decrease in the image signal voltage across this capacitor due to the parasitic capacitance component existing in the thin-film transistor.