Residual d.c. measurement in in-plane switching liquid crystal displays by a new light minimum/maximum method on a polyimide layer

Abstract

The measurement of residual d.c. in in-plane switching liquid crystal displays on a rubbed polyimide surface was investigated. We propose a new residual d.c. measurement method, named the 'light minimum/maximum method'. The precision of residual d.c. measurement by the light minimum/maximum method was found to be greater than that of the conventional icker minimizing method.