Multi-domain vertical alignment liquid crystal display

Abstract

A multi-domain vertical alignment liquid crystal display (MVA LCD) has a plurality of pixel electrodes for defining a plurality of pixel units. The pixel units are disposed in matrix arrangement, and each of them has a first electrode, a second electrode, and a third electrode. When a voltage is applied to said pixel electrode, the first electrode and the common electrode have a higher absolute voltage difference than the second electrode and the common electrode. The third electrode and the common electrode have the lowest absolute voltage difference.

1 . A multi-domain vertical alignment liquid crystal display (MVA LCD) comprising: 
 a first substrate and a second substrate, wherein said second substrate is positioned apart from said first substrate and is parallel to said first substrate;    a liquid crystal material filling the space between said first substrate and said second substrate;    a vertical alignment film aligning liquid crystal molecules of said liquid crystal material being substantially perpendicular to the surface of said vertical alignment film while no voltage is applied;    a common electrode on the inner side of said second substrate; and    a plurality of pixel electrodes on the inner side of said first substrate and defining a plurality of pixel units, said plurality of pixel units disposed in a matrix arrangement and each of said plurality of pixel electrodes comprising: 
 a main slit for dividing said pixel electrode into a plurality of section electrodes, such that said pixel unit having a plurality of areas, and each of said plurality of areas comprising: 
 a main electrode on the middle of said plurality of section electrodes; and  
 a grating electrode on the two sides of said main electrode, said grating electrode having a plurality of sub-slits and a plurality of sub-electrodes, wherein said plurality of sub-electrodes alternate with said plurality of sub-electrode.  
 
   
   
   
       2 . The MVA LCD according to  claim 1 , wherein said main slit is broader than said plurality of sub-electrodes and said plurality of sub-slits.  
   
   
       3 . The MVA LCD according to  claim 1 , wherein said main electrode is broader than said plurality of sub-electrodes and said plurality of sub-slits.  
   
   
       4 . The MVA LCD according to  claim 1 , wherein said main slit diagonally divides said pixel electrode into said plurality of section electrodes.  
   
   
       5 . The MVA LCD according to  claim 5 , wherein said main electrode is substantially parallel to said main slit.  
   
   
       6 . The MVA LCD according to  claim 1 , wherein each of said plurality of pixel electrodes comprises a plurality of said main slits for dividing said pixel electrode into a plurality of section electrodes.  
   
   
       7 . The MVA LCD according to  claim 1 , wherein said liquid crystal material is negative type.  
   
   
       8 .- 15 . (canceled)