Liquid crystal display device and method of manufacturing a liquid crystal display device

Abstract

A liquid crystal display device ( 10 ) includes: gate wiring ( 501 ) formed on a substrate ( 500 ) and along a first direction; drain wiring ( 702 ) formed on the substrate ( 500 ) and along a second direction that is different from the first direction; a common electrode ( 900 ) formed so as to cover the drain wiring ( 702 ) through intermediation of an insulating film ( 800 ); and common wiring ( 901 ) formed on the common electrode ( 900 ) and along the drain wiring ( 702 ). The common wiring ( 901 ) is formed so that at least a part of the common wiring ( 901 ) overlaps with a region in which the drain wiring ( 702 ) is formed.

What is claimed is: 
     
         1 . A liquid crystal display device, comprising:
 gate wiring formed on a substrate and along a first direction;   drain wiring formed on the substrate and along a second direction that is different from the first direction;   a common electrode formed so as to cover the drain wiring through intermediation of a first insulating film; and   common wiring formed on the common electrode and along the drain wiring,   wherein the common wiring is formed so that at least a part of the common wiring overlaps with a region in which the drain wiring is formed.   
     
     
         2 . The liquid crystal display device according to  claim 1 , further comprising:
 a second insulating film formed so as to cover the common electrode and the common wiring; and   a pixel electrode formed on the second insulating film, at least a part of the pixel electrode overlapping with the common electrode.   
     
     
         3 . The liquid crystal display device according to  claim 1 , wherein the common wiring has opposing pattern edges that are each separated from a pattern edge of the drain wiring at an interval of a predetermined width or more in plan view. 
     
     
         4 . The liquid crystal display device according to  claim 3 , wherein the predetermined width is determined to be larger than an interval in plan view between the pattern edge of the drain wiring, and a boundary between, in a surface of the common electrode, a region that is inclined due to the drain wiring and a region parallel to a surface of the substrate. 
     
     
         5 . The liquid crystal display device according to  claim 3 , wherein the predetermined width is 1 micrometer or more. 
     
     
         6 . The liquid crystal display device according to  claim 1 , wherein one of opposing pattern edges of the common wiring is formed on a surface of the common electrode in a region parallel to a surface of the substrate and above the region in which the drain wiring is formed. 
     
     
         7 . The liquid crystal display device according to  claim 1 , wherein both of opposing pattern edges of the common wiring is formed on a surface of the common electrode in a region parallel to a surface of the substrate and above the region in which the drain wiring is formed. 
     
     
         8 . The liquid crystal display device according to  claim 1 , wherein both of opposing pattern edges of the common wiring is formed on a surface of the common electrode in a region parallel to a surface of the substrate and outside the region in which the drain wiring is formed. 
     
     
         9 . The liquid crystal display device according to  claim 1 , wherein one of opposing pattern edges of the common wiring is formed in a region parallel to a surface of the substrate and above the region in which the drain wiring is formed, and another of the opposing pattern edges of the common wiring is formed in the region parallel to the surface of the substrate and outside the region in which the drain wiring is formed. 
     
     
         10 . A method of manufacturing a liquid crystal display device, the method comprising:
 forming gate wiring on a substrate and along a first direction;   forming drain wiring on the substrate and along a second direction that is different from the first direction;   forming a common electrode so as to cover the drain wiring through intermediation of a first insulating film; and   forming common wiring on the common electrode and along the drain wiring,   wherein the forming of the common wiring comprises forming the common wiring so that at least a part of the common wiring overlaps with a region in which the drain wiring is formed.