Patent ID: 8687159
Filing Date: 2014-04-01
Classification: G02F

Abstract:
1. A liquid crystal display device of an in-plane switching mode comprising: a substrate; gate lines and data lines which cross each other on the substrate to define pixel regions; thin film transistors which are formed at crossing portions of the gate lines and the data lines; first electrodes which have a plurality of first fingers and include L-shaped protruded patterns at one end of each of the first fingers in the pixel regions, wherein the L-shaped protruded patterns include first edge portions extended from the first fingers and second edge portions inclined to the first edge portions at 100˜115 degrees, and the second edge portion is parallel to the gate lines, wherein the first fingers are formed as a single body with at least one common line; second electrodes which have second fingers formed alternately with the first fingers and include |-shaped patterns at one end of each of the second fingers in the pixel regions, wherein at the one end of each of the second fingers, the |-shaped pattern is extended toward the at least one common line to overlap with adjacent L-shaped protruded patterns of a left side, and “−” shaped patterns are further extended from ends of the |-shaped patterns to overlap with the L-shaped protruded patterns of a right side, wherein the |-shaped patterns and the “−” shaped patterns are formed in a same identical shape with the L-shaped protruded patterns of the first fingers to improve uniformity of a direction of electric field; and wherein the at least one common line is formed on a same layer as the gate lines, wherein the first electrodes are made of metal of the same layer as the gate lines, and the second electrodes are formed of a transparent metal layer; wherein the L-shaped protruded patterns have a shape protruded from the at least one common line the L-shaped protruded patterns made of the metal are separated each other, and each second edge portion overlaps with a part of an adjacent |-shaped pattern made of the transparent metal layer; wherein the at least one common line has a reduction portion to open the transparent |-shaped patterns at each end of each of the second fingers; wherein the reduction portion and the second edge portion are alternately formed with respect to the at least one common line; wherein a crossing portion of each reduction portion and each of the corresponding second edge portion is at each of the corresponding |-shaped pattern, and wherein the “−” shaped patterns of the second fingers and the second edge portion of the first fingers are identical portions that are disposed on a same line parallel to the gate line.