Liquid crystal horizontal orientation agent, horizontal orientation type liquid crystal composition, and horizontal orientation type liquid crystal display device and method of fabricating the same

Abstract

The present invention provides a liquid crystal horizontal orientation agent, a horizontal orientation type liquid crystal composition, a horizontal orientation type LCD device and a method of fabricating the horizontal orientation type LCD device. In one embodiment, the liquid crystal molecule is horizontally oriented by the liquid crystal horizontal orientation agent without the rubbed orientation layer.

What is claimed is: 
     
         1 . A liquid crystal horizontal orientation agent, comprising:
 a core; and   a dendrimer including a dendron part linked with the core.   
     
     
         2 . The liquid crystal horizontal orientation agent according to  claim 1 , wherein the dendron part includes at least one compound selected from a group consisting of alkyl, alkoxy and fluorine at an end of the dendron part. 
     
     
         3 . The liquid crystal horizontal orientation agent according to  claim 1 , wherein the core has a first formula of: 
       
         
           
           
               
               
           
         
         and the dendron part has a second formula of: 
       
       
         
           
           
               
               
           
         
         wherein each of “a” and “b” is an integer of 2 to 5, and R 2  has a third formula of: 
       
       
         
           
           
               
               
           
         
         wherein “c” is an integer of 3 to 12, and “A” is one of: 
       
       
         
           
           
               
               
           
         
         and wherein “B” is one of: 
       
       
         
           
           
               
               
           
         
       
       and “R1” is selected from C1 to C12 alkyl, C1 to C12 alkoxy and fluorine. 
     
     
         4 . A horizontal orientation type liquid crystal composition, comprising:
 a liquid crystal component; and   a liquid crystal horizontal orientation agent including:   a core; and   a dendrimer including a dendron part linked with the core.   
     
     
         5 . The horizontal orientation type liquid crystal composition according to  claim 4 , wherein the dendron part includes at least one compound selected from a group consisting of alkyl, alkoxy and fluorine at an end of the dendron part. 
     
     
         6 . The horizontal orientation type liquid crystal composition according to  claim 4 , wherein the core has a first formula of: 
       
         
           
           
               
               
           
         
         and the dendron part has a second formula of: 
       
       
         
           
           
               
               
           
         
         wherein each of “a” and “b” is an integer of 2 to 5, and R 2  has a third formula of: 
       
       
         
           
           
               
               
           
         
         wherein “c” is an integer of 3 to 12, and “A” is one of: 
       
       
         
           
           
               
               
           
         
         and wherein “B” is one of: 
       
       
         
           
           
               
               
           
         
         and “R1” is selected from C1 to C12 alkyl, C1 to C12 alkoxy and fluorine. 
       
     
     
         7 . The horizontal orientation type liquid crystal composition according to  claim 4 , wherein the liquid crystal horizontal orientation agent has compatibility to the liquid crystal component. 
     
     
         8 . The horizontal orientation type liquid crystal composition according to  claim 4 , wherein the liquid crystal component is a fluorine liquid crystal mixture.