Patent ID: 9244322
Filing Date: 2016-01-26
CPC Classification: G02F

Claim Text:
1. A liquid crystal display device comprising: a first substrate including a first insulative substrate, a semiconductor layer formed on an inside of the first insulative substrate, a first interlayer insulation film covering the semiconductor layer, a gate line extending on the first interlayer insulation film in a first direction, a second interlayer insulation film covering the gate line, a first source line and a second source line extending, respectively, on the second interlayer insulation film in a second direction which is substantially perpendicular to the first direction, a switching element electrically connected to the gate line and the first source line, a pixel electrode which is located between the first source line and the second source line on the second interlayer insulation film, and is spaced apart from the first source line and the second source line, the pixel electrode being in contact with the semiconductor layer via a contact hole that penetrates the first interlayer insulation film and the second interlayer insulation film and having a strip shape extending on the second interlayer insulation film in the second direction, and a first alignment film directly covering the first source line, the second source line and the pixel electrode; a second substrate including a second insulative substrate, a common electrode which extends in the second direction and is opposed to each of the first source line and the second source line on both sides of the pixel electrode, on that side of the second insulative substrate, which is opposed to the first substrate, and a second alignment film covering the common electrode; and a liquid crystal layer including liquid crystal molecules held between the first substrate and the second substrate, wherein the first source line, the second source line, and the pixel electrode are formed directly on the second interlayer insulation film, a pixel partitioned by the gate line and the first and second source lines has a rectangular shape, the pixel electrode extends in a longitudinal direction of the pixel, is formed of an opaque wiring material, is formed of the same material as the first source line and the second source line, and is formed of a metallic material selected from the group consisting of aluminum (Al), titanium (Ti), silver (Ag), molybdenum (Mo), tungsten (W), copper (Cu) and chromium (Cr), or an alloy including one selected from said group, the common electrode is formed of an opaque wiring material, and is formed of a metallic material selected from the group consisting of aluminum (Al), titanium (Ti), silver (Ag), molybdenum (Mo), tungsten (W), copper (Cu) and chromium (Cr), or an alloy including one selected from the group, and the first alignment film is subjected to alignment treatment in a direction parallel to the longitudinal direction of the pixel.