Liquid crystal display device having wire grid polarizer and two display structures and method of forming the same

Abstract

A display cell structure is provided. A first substrate and a second substrate are spaced apart from each other, and a wire grid polarizer layer is disposed therebetween, forming a first cell gap between the first substrate and the wire grid polarizer layer and a second cell gap between the second substrate and the wire grid polarizer layer. A first display structure is disposed in the first cell gap, and includes multiple first pixel electrodes and a polymer liquid crystal layer. A polarizer layer is disposed on the second substrate and facing an opposite side to the wire grid polarizer layer. A second display structure is disposed in the second cell gap, and includes multiple second pixel electrodes and a liquid crystal layer.

What is claimed is: 
     
         1 . A method for forming a display cell structure, comprising:
 forming a first display structure of the display cell structure by:
 disposing a plurality of first pixel electrodes on a first substrate; 
 disposing a polymer liquid crystal layer on the first substrate to cover the first pixel electrodes; and 
 disposing a common electrode layer on the polymer liquid crystal layer; 
   forming a wire grid polarizer layer on the common electrode layer;   forming a second display structure of the display cell structure by:
 disposing a plurality of second pixel electrodes on a second substrate; and 
   disposing the second substrate with the second pixel electrodes to face the wire grid polarizer layer, such that a liquid crystal layer is positioned between the second substrate and the wire grid polarizer layer.   
     
     
         2 . The method of  claim 1 , wherein the wire grid polarizer layer is formed by a low resistivity material to function as a common electrode for the display device, the low resistivity material has an electrical resistivity smaller than 10 −7  Ω·m, and the low resistivity material is selected from the group consisting of aluminum (Al), Molybdenum (Mo), Tungsten (W), or a combination thereof. 
     
     
         3 . The method of  claim 1 , wherein each of the second pixel electrodes is aligned to one of the first pixel electrodes along a direction substantially perpendicular to the wire grid polarizer layer. 
     
     
         4 . The method of  claim 1 , further comprising:
 forming a polarizer layer on the second substrate and facing an opposite side to the wire grid polarizer layer.   
     
     
         5 . The method of  claim 1 , wherein the second display structure is in a vertically-aligned (VA) mode or a twisted nematic (TN) mode. 
     
     
         6 . The method of  claim 1 , further comprising:
 forming a plurality of color filters on the second substrate,   wherein each of the second pixel electrodes corresponds to one of the color filters to form a sub-pixel.   
     
     
         7 . The method of  claim 1 , wherein the common electrode layer is formed by indium tin oxide.