Patent ID: 7304627
Filing Date: 2007-12-04
Classification: G09G

Abstract:
1. An electric field alignment method of liquid crystal display, comprising the steps of: applying a first voltage to a gate terminal of a thin film transistor for driving a liquid crystal cell having ferroelectric liquid crystal, wherein the first voltage is below a threshold voltage of the thin film transistor; and supplying a second voltage for electric field alignment of the ferroelectric liquid crystal to the liquid crystal cell by using leakage current of the thin film transistor generated due to the first voltage, wherein the second voltage has uniformly maintained polarity and is applied to a source terminal of the thin film transistor such that the second voltage is supplied from the source terminal to a pixel electrode of the liquid crystal cell via leakage current of the thin film transistor to a drain terminal of the thin film transistor that is connected to the pixel electrode.