Vertically-aligned (VA) liquid crystal display device

Abstract

A vertically alignment mode liquid crystal display device having an improved viewing angle characteristic is disclosed. The disclosed liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage being applied, almost horizontal when a predetermined voltage is applied, and oblique when an intermediate voltage is applied. At least one of the substrates includes a structure as domain regulating means, and inclined surfaces of the structure operate as a trigger to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied.

1 - 147 . (canceled)  
   
   
       148 . A liquid crystal display (LCD), comprising: 
 a first substrate having a first surface and a second surface;    a second substrate having a first surface and a second surface, the first surface of the second substrate facing the first surface of the first substrate;    a first electrode formed on a first surface of the first substrate and having a plurality of first domain dividers;    a second electrode formed on the first surface of the second substrate and having a plurality of second domain dividers;    a first polarizer formed on the second surface of the first substrate;    a second polarizer formed on the second surface of the second substrate; and    a pixel region divided into a plurality of domains by the first domain dividers and the second domain dividers,    wherein a length direction of each domain is tilted at an angle about 45 degree with respect to polarizing directions of the first polarizer and the second polarizer.    
   
   
       149 . THE LCD of  claim 148 , wherein either the first domain dividers or the second domain dividers are apertures.  
   
   
       150 . The LCD of  claim 148 , further comprising a first compensation film formed between the first substrate and the first polarizer.  
   
   
       151 . The LCD of  claim 150 , wherein the first compensation film is a biaxial compensation film.  
   
   
       152 . The LCD of  claim 150 , wherein a slow axis of the first compensation film is in parallel or perpendicular to the polarizing directions of the first polarizer film and the second polarizer film.  
   
   
       153 . The LCD of  claim 150 , further comprising a second compensation film formed between the second substrate and the second polarizer.  
   
   
       154 . The LCD of  claim 153 , wherein the first compensation film is an a-plate compensation film, and the second compensation film is a c-plate compensation film.  
   
   
       155 . The LCD of  claim 154 , wherein a slow axis of the a-plate compensation film is in parallel or perpendicular to the polarizing directions of the first polarizer and the second polarizer.  
   
   
       156 . The LCD of  claim 148 , wherein the first domain dividers are protrusions.  
   
   
       157 . The LCD of  claim 148 , wherein the first domain dividers and the second domain dividers are arranged alternately.  
   
   
       158 . The LCD of  claim 157 , wherein the first domain dividers and the second domain dividers are bent in zigzag shape.  
   
   
       159 . The LCD of  claim 148 , comprising liquid crystals having negative dielectric constant anisotropy between the first substrate and the second substrate.