Liquid Crystal Display Device

Abstract

A liquid crystal display device includes a pixel electrode, a common electrode, and an insulating layer which is formed between the pixel electrode and the common electrode. The pixel electrode or the common electrode includes at least one strip shaped portion which is extended in a first direction. A first thickness of the insulating layer between the pixel and common electrodes at a first portion extending from a vicinity of end of the at least one strip shaped portion in the first direction toward the end of the at least one strip shaped portion is thicker than a second thickness of the insulating layer between the pixel and the common electrodes at a second portion extending from the vicinity of end of the at least one strip shaped portion in the first direction toward a center of the at least one strip shaped portion.

What is claimed is: 
     
         1 . A liquid crystal display device comprising:
 a pixel electrode;   a common electrode generating an electric field to align liquid crystal molecules in cooperation with the pixel electrode; and   an insulating layer which is formed between the pixel electrode and the common electrode;   wherein one of the pixel electrode and the common electrode includes at least one strip shaped portion formed therein which is extended in a first direction; and   wherein a first thickness of the insulating layer between the pixel electrode and the common electrode at a first portion of the insulating layer extending from a vicinity of end of the at least one strip shaped portion in the first direction toward the end of the at least one strip shaped portion is thicker than a second thickness of the insulating layer between the pixel electrode and the common electrode at a second portion of the insulating layer extending from the vicinity of end of the at least one strip shaped portion in the first direction toward a center of the at least one strip shaped portion.   
     
     
         2 . The liquid crystal display device according to  claim 1 , wherein one of the pixel electrode and the common electrode includes a plurality of strip shaped portions which have the at least one strip shaped portion and are extended in the first direction. 
     
     
         3 . The liquid crystal display device according to  claim 1 , wherein a difference between the first thickness and the second thickness of the insulating layer is formed by a first lamination number of the insulating layer at the first portion being larger than a second lamination number of the insulating layer at the second portion. 
     
     
         4 . The liquid crystal display device according to  claim 1 , wherein the first portion is a domain generating region. 
     
     
         5 . A liquid crystal display device comprising:
 a pixel electrode;   a common electrode generating an electric field to align liquid crystal molecules in cooperation with the pixel electrode; and   an insulating layer which is formed between the pixel electrode and the common electrode;   wherein one of the pixel electrode and the common electrode includes at least one strip shaped portion,   wherein the at least one strip shaped portion includes a first extended portion which is extended in a first direction, a second extended portion which is extended in a second direction differing from the first direction, and an inflected portion which is arranged between the first extended portion and the second extended portion; and   wherein a first thickness of the insulating layer between the pixel electrode and the common electrode at the first extended portion is thinner than a second thickness of the insulating layer between the pixel electrode and the common electrode at the inflected portion.   
     
     
         6 . The liquid crystal display device according to  claim 5 , wherein one of the pixel electrode and the common electrode includes a plurality of strip shaped portions which have the at least one strip shaped portion, each of the plurality of strip shaped portions having the first extended portion, the second extended portion, and the inflected portion. 
     
     
         7 . The liquid crystal display device according to  claim 5 , wherein a difference between the first thickness and the second thickness of the insulating layer is formed by a first lamination number of the insulating layer at the first extended portion being smaller than a second lamination number of the insulating layer at the inflected portion. 
     
     
         8 . The liquid crystal display device according to  claim 5 , wherein the inflected portion is a domain generating region. 
     
     
         9 . The liquid crystal display device according to  claim 5 , wherein a third thickness of the insulating layer between the pixel electrode and the common electrode at the second extended portion is thinner than the second thickness of the insulating layer. 
     
     
         10 . A liquid crystal display device comprising a pixel electrode;
 a common electrode generating an electric field to align liquid crystal molecules in cooperation with the pixel electrode; and   an insulating layer which is stacked between the pixel electrode and the common electrode;   wherein one of the pixel electrode and the common electrode includes at least one strip shaped portion,   wherein the at least one strip shaped portion includes a first extended portion which is extended in a first direction, a second extended portion which is extended in a second direction differing from the first direction, and an inflected portion which is arranged between the first extended portion and the second extended portion;   wherein a first thickness of the insulating layer between the pixel electrode and the common electrode at the first extended portion is thinner than a second thickness of the insulating layer between the pixel electrode and the common electrode at the inflected portion; and   wherein a third thickness of the insulating layer between the pixel electrode and the common electrode at a first portion of the first extended portion from a vicinity of end of the at least one strip shaped portion in the first direction toward the end of the at least one strip shaped portion is thicker than the first thickness of the insulating layer between the pixel electrode and the common electrode at a second portion of the first extended portion from the vicinity of end of the at least one strip shaped portion in the first direction toward a center of the at least one strip shaped portion.   
     
     
         11 . The liquid crystal display device according to  claim 10 , wherein one of the pixel electrode and the common electrode includes a plurality of strip shaped portions which have the at least one strip shaped portion, each of the plurality of strip shaped portions having the first extended portion, the second extended portion, and the inflected portion. 
     
     
         12 . The liquid crystal display device according to  claim 10 , wherein a difference between the first thickness and the second thickness of the insulating layer is formed by a first lamination number of the insulating layer at the first extended portion being smaller than a second lamination number of the insulating layer at the inflected portion, and
 a difference between the first thickness and the third thickness of the insulating layer is formed by the first lamination number of the insulating layer at the second portion of the first extended portion being smaller than a third lamination number of the insulating layer at the first portion of the first extended portion.   
     
     
         13 . The liquid crystal display device according to  claim 10 , wherein each of the inflected portion and the first portion of the first extended portion is a domain generating region. 
     
     
         14 . The liquid crystal display device according to  claim 10 , wherein a fourth thickness of the insulating layer between the pixel electrode and the common electrode at the second extended portion is thinner than the second thickness of the insulating layer.