Phase difference control component, process for producing the same and liquid crystal display device

Abstract

There are provided a phase difference control component, which can realize a liquid crystal display device having a wide angle of visibility, has excellent phase difference symmetry and can realize optical compensation, and a process for producing the same. The phase difference control component comprises a base material; and a phase difference control layer formed of a fixed liquid crystal material provided on the base material through an aligning film and is characterized in that the angle of liquid crystal molecules, present at the interface of the aligning film and the phase difference control layer, to the base material being substantially 0 (zero) degree.

1 . A phase difference control component comprising: 
 a base material; and    a phase difference control layer formed of a fixed liquid crystal material provided on said base material through an aligning film,    an angle of a molecules of said liquid crystal, present at the interface of the aligning film and the phase difference control layer, to the base material is substantially 0 (zero) degree.    
   
   
       2 . The phase difference control component according to  claim 1 , wherein said phase difference control layer has positive birefringence properties and the optical axis thereof is parallel to the plane of the phase difference control layer.  
   
   
       3 . The phase difference control component according to  claim 1 , wherein said phase difference control layer comprises a first phase difference control layer and a second phase difference control layer stacked in that order, and the first phase difference control layer has positive birefringence properties and the optical axis thereof is parallel to the plane of the first phase difference control layer, while the second phase difference control layer has negative birefringence properties and the optical axis thereof is perpendicular to the plane of the second phase difference control layer.  
   
   
       4 . The phase difference control component according to  claim 1 , wherein said phase difference control layer comprises a first phase difference control layer and a second phase difference control layer stacked in that order, and the first phase difference control layer has positive birefringence properties and the optical axis thereof is parallel to the plane of the first phase difference control layer, while the second phase difference control layer has positive birefringence properties and the optical axis thereof is perpendicular to the plane of the second phase difference control layer.  
   
   
       5 . The phase difference control component according to  claim 1 , wherein said phase difference control layer is formed of a liquid crystal material which is curable upon exposure to ultraviolet light.  
   
   
       6 . A process for producing a phase difference control component according to  claim 1  comprising at least the steps of: 
 forming an aligning film on a base material; and    providing a liquid crystal material on said aligning film and applying alignment controlling force to the liquid crystal material to form a phase difference control layer,    said alignment controlling force to the liquid crystal material being carried out by a photoalignment method in which collimated deflected light is applied to the alignment film from the vertical direction.    
   
   
       7 . A liquid crystal display device comprising a phase difference control component according to  claim 1 .  
   
   
       8 . The liquid crystal display device according to  claim 7 , wherein said phase difference control component and a color filter are stacked on top of each other.