Patent ID: 6525797
Filing Date: 2003-02-25
Classification: G02F

Abstract:
A liquid crystal display device, comprising:first and second substrates disposed in parallel and facing each other at some distance; liquid crystal material with liquid crystal molecules having a negative dielectric constant anisotropy and filled in a space between said first and second substrates; first and second electrodes respectively formed on inner surfaces of said first and second substrates and defining pixels; a first projection pattern formed on a surface of said first electrode; a domain boundary regulating member formed on the inner surface of said second substrate, said domain boundary regulating member together with said first projection pattern regulating the boundary of each domain in which the liquid crystal molecules are tilted in a same direction; a first alignment film formed on the inner surface of said first substrate, covering said first electrode and said first projection pattern, said first alignment film vertically directing the liquid crystal molecules in said liquid crystal material; and a second alignment film formed on the inner surface of said second substrate, covering said second electrode and said domain boundary regulating member, said second alignment film vertically directing the liquid crystal molecules in said liquid crystal material, wherein at least characteristics of at least one of film thicknesses, materials and surface activation degrees of said first and second alignment films are different from each other, and the different characteristics are set so that a residual d.c. voltage between said first and second alignment films after an a.c. voltage is applied across said first and second electrodes becomes smaller than a residual d.c. voltage when the characteristics are the same.