Curved liquid crystal display device

Abstract

A curved liquid crystal display device, includes: a first bent substrate; a second bent substrate disposed facing the first bent substrate; a liquid crystal layer disposed between the first bent substrate and the second bent substrate, the liquid crystal layer including first liquid crystal molecules disposed adjacent to the first bent substrate and second liquid crystal molecules disposed adjacent to the second bent substrate; a first alignment inducing layer disposed between the first bent substrate and the liquid crystal layer; and a second alignment inducing layer disposed between the second bent substrate and the liquid crystal layer, wherein one of the first alignment inducing layer and the second alignment inducing layer includes a polymerized reactive mesogen, and the remaining alignment inducing layer includes polyimide.

What is claimed is: 
     
         1 . A curved liquid crystal display device, comprising:
 a first bent substrate;   a second bent substrate disposed facing the first bent substrate;   a liquid crystal layer disposed between the first bent substrate and the second bent substrate, the liquid crystal layer comprising first liquid crystal molecules disposed adjacent to the first bent substrate and second liquid crystal molecules disposed adjacent to the second bent substrate;   a first alignment inducing layer disposed between the first bent substrate and the liquid crystal layer; and   a second alignment inducing layer disposed between the second bent substrate and the liquid crystal layer,   wherein one of the first alignment inducing layer and the second alignment inducing layer comprises a polymerized reactive mesogen, and the remaining alignment inducing layer comprises polyimide.   
     
     
         2 . The curved liquid crystal display device of  claim 1 , wherein the first bent substrate has a first radius of curvature, and the second bent substrate has a second radius of curvature, and
 the first radius of curvature is greater than or equal to the second radius of curvature.   
     
     
         3 . The curved liquid crystal display device of  claim 2 , wherein an average value of a first pretilt angle of first liquid crystal molecules with respect to the first alignment inducing layer is greater than or equal to an average value of a second pretilt angle of second liquid crystal molecules with respect to the second alignment inducing layer. 
     
     
         4 . The curved liquid crystal display device of  claim 3 , wherein an average value of the first pretilt angle is from 88 to 89 degrees. 
     
     
         5 . The curved liquid crystal display device of  claim 2 , wherein the first alignment inducing layer comprises the polymerized reactive mesogen, and the second alignment inducing layer comprises the polyimide. 
     
     
         6 . The curved liquid crystal display device of  claim 5 , wherein the polymerized reactive mesogen comprises:
 at least one of a first reactive mesogen represented by the following Formula 1 and a second reactive mesogen represented by the following Formula 2; and   a third reactive mesogen represented by the following Formula 3:   
       
         
           
           
               
               
           
         
         in Formulae 1 and 2, 
         A 1 , A 2 , B 1 , and B 2  are each independently a substituted or unsubstituted divalent hydrocarbon ring, or a substituted or unsubstituted divalent heterocycle, 
         a1, a3, b1, b2, b3, and b4 are each independently an integer of 0 to 6, 
         a2 and a4 are each independently 0 or 1, 
         L 1  and L 2  are each independently a direct linkage, —O—, —S—, —CO—, —COO—, —OCOO—, —O(CH 2 ) k1 —, —S(CH 2 ) k1 —, —O(CF 2 ) k1 —, —S(CF 2 ) k1 —, —(CH 2 ) k1 —, —CF 2 CH 2 —, —(CF 2 ) k1 —, —CH═CH—, —CF═CF—, —C≡C—, —CH═CH—COO—, or —(CH 2 ) k1 —COO—(CH 2 ) k2 —O—, and 
         k1 and k2 are each independently an integer of 0 to 4, 
         in Formula 3, 
         X is one of the following X-1 to X-17: 
       
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
       wherein:
 G is a deuterium atom, a halogen atom, —OH, —NH 2 , —CN, —CF 3 , —B(OH) 2 , or —R 0 (CH 2 ) r R 1 , R 0  is —O, —NH, —S, —C═O, or —O—C═O, R 1  is —OH, —NH 2 , —CN, —CF 3 , —B(OH) 2 , —SH and —CH 3 , r is an integer of 1 to 12, 
 b5 and b6 are each independently an integer of 0 to 6, 
 in Formulas 1 to 3, 
 Z 1  and Z 2  are each independently —O—, —S—, —CO—, —COO—, —OCOO—, —O(CH 2 ) m1 —, —S(CH 2 ) m1 —, —O(CF 2 ) m1 —, —S(CF 2 ) m1 —, —(CH 2 ) m1 —, —CF 2 CH 2 —, —(CF 2 ) m1 —, —CH═CH—, —CF═CF—, —C≡C—, —CH═CH—COO—, —(CH 2 ) m1 —COO—, —(CH 2 ) m1 —COO—(CH 2 ) m12 —O—, —CH-(Sp-Pa)-, —CH 2 CH—(Sp-Pa)-, or —(CH-(Sp-Pa)-CH-(Sp-Pa))-, 
 m1 and m2 are each independently an integer of 0 to 4, 
 Sp is a direct linkage or a spacer group, and 
 Pa, Pb and Pc are a polymerizable group. 
 
     
     
         7 . The curved liquid crystal display device of  claim 2 , wherein the first alignment inducing layer comprises the polyimide, and the second alignment inducing layer comprises the polymerized reactive mesogen. 
     
     
         8 . The curved liquid crystal display device of  claim 7 , wherein the polymerized reactive mesogen comprises at least one of a first reactive mesogen represented by the following Formula 1 or a second reactive mesogen represented by the following Formula 2: 
       
         
           
           
               
               
           
         
         where A 1 , A 2 , B 1 , and B 2  are each independently a substituted or unsubstituted divalent hydrocarbon ring, or a substituted or unsubstituted divalent heterocycle, 
         a1, a3, b1, b2, b3, and b4 are each independently an integer of 0 to 6, 
         a2 and a4 are each independently 0 or 1, 
         L 1  and L 2  are each independently a direct linkage, —O—, —S—, —CO—, —COO—, —OCOO—, —O(CH 2 ) k1 —, —S(CH 2 ) k1 —, —O(CF 2 ) k1 —, —S(CF 2 ) k1 —, —(CH 2 ) k1 —, —CF 2 CH 2 —, —(CF 2 ) k1 —, —CH═CH—, —CF═CF—, —C≡C—, —CH═CH—COO—, or —(CH 2 ) k1 —COO—(CH 2 ) k2 —O—, and 
         k 1  and k 2  are each independently an integer of 0 to 4, 
         Z 1  and Z 2  are each independently a direct linkage, —O—, —S—, —CO—, —COO—, —OCOO—, —O(CH 2 ) m1 —, —S(CH 2 ) m1 —, —O(CF 2 ) m1 —, —S(CF 2 ) m1 —, —(CH 2 ) m1 —, —CF 2 CH 2 —, —(CF 2 ) m1 —, —CH═CH—, —CF═CF—, —C≡C—, —CH═CH—COO—, —(CH 2 ) m1 —COO—, —(CH 2 ) m1 —COO—(CH 2 ) m2 —O—, —CH-(Sp-Pa)-, —CH 2 CH—(Sp-Pa)-, or —(CH-(Sp-Pa)-CH-(Sp-Pa))-, 
         m1 and m2 are each independently an integer of 0 to 4, 
         Sp is a direct linkage or a spacer group, 
         Pa, Pb and Pc are a polymerizable group, and 
         E is a hydrogen bond functional group comprising at least one of a nitrogen atom or an oxygen atom.