Liquid crystal display
A liquid crystal display includes a gate line and a data line on a substrate and intersecting each other, a pixel region defined by the gate line and the data line, a pixel electrode in the pixel region, a thin-film transistor (TFT) in the pixel region, and a common electrode over or under the pixel electrode. The TFT is configured to apply a voltage to the pixel electrode. The common electrode is configured to generate an electric field with the pixel electrode and is on a higher layer than the data line. The common electrode is excluded in a region of the higher layer that overlaps the data line.
1 . A liquid crystal display (LCD), comprising:
a gate line and a data line on a substrate and intersecting each other;
a pixel region defined by the gate line and the data line;
a pixel electrode in the pixel region;
a thin-film transistor (TFT) in the pixel region, the TFT being configured to apply a voltage to the pixel electrode; and
a common electrode over or under the pixel electrode, the common electrode being configured to generate an electric field with the pixel electrode and being on a higher layer than the data line, and the common electrode being excluded in a region of the higher layer that overlaps the data line.
2 . The LCD of claim 1 , further comprising a common electrode line on the substrate, the common electrode line being parallel to the gate line and being configured to apply a common voltage to the common electrode.
3 . The LCD of claim 2 , wherein the common electrode line is on a same layer as the gate line.
4 . The LCD of claim 1 , further comprising:
a first passivation layer on the TFT and the data line, the common electrode being on the first passivation layer, and
a second passivation layer on the common electrode, and the pixel electrode being on the second passivation layer.
5 . The LCD of claim 4 , wherein the first passivation layer is made of an inorganic material, and the second passivation layer is made of an organic material.
6 . The LCD of claim 4 , wherein the pixel electrode includes a plurality of slit patterns.
7 . The LCD of claim 1 , further comprising a passivation layer, the pixel electrode being connected to the TFT, the passivation layer being on the TFT and the pixel electrode, and the common electrode being on the passivation layer.
8 . The LCD of claim 7 , wherein the common electrode includes a plurality of slit patterns.
9 . A liquid crystal display (LCD), comprising:
a gate electrode on a substrate;
a gate insulating film on the gate electrode;
a semiconductor layer on the gate insulating film and overlapping the gate electrode;
a data line on the gate insulating film;
source and drain electrodes on the semiconductor layer and the gate insulating film, the source and drain electrodes being separated from each other by a predetermined gap;
a first passivation layer on a surface of the substrate having the source and drain electrodes and the data line;
a common electrode on the first passivation layer, the common electrode being excluded in a region of the first passivation layer that overlaps the data line;
a second passivation layer on the common electrode; and
a pixel electrode on the second passivation layer.
10 . The LCD of claim 9 , wherein the first passivation layer is made of an inorganic material, and the second passivation layer is made of an organic material.
11 . The LCD of claim 10 , wherein the first passivation layer is made of SiNx or SiO 2 .
12 . The LCD of claim 9 , wherein the first passivation layer and the second passivation layer are made of SiNx or SiO 2 .
13 . The LCD of claim 9 , wherein the pixel electrode is connected to the drain electrode.
14 . The LCD of claim 9 , wherein the pixel electrode includes a plurality of slit patterns.
15 . The LCD of claim 9 , further comprising a common electrode line on a same layer as the gate electrode.
16 . The LCD of claim 15 , wherein the common electrode line is connected to the common electrode through a contact hole formed in the first passivation layer and is configured to apply a common voltage to the common electrode.
17 . The LCD of claim 16 , wherein the common electrode is separated from the contact hole by a predetermined gap and is not in contact with the contact hole.
18 . A liquid crystal display (LCD), comprising:
a gate electrode on a substrate;
a gate insulating film on the gate electrode;
a semiconductor layer on the gate insulating film and overlapping the gate electrode;
a data line on the gate insulating film;
source and drain electrodes on the semiconductor layer and the gate insulating film, the source and drain electrodes being separated from each other with respect to the gate electrode;
a pixel electrode on the gate insulating film and connected to the drain electrode;
a passivation layer on a surface of the substrate having the source and drain electrodes, the pixel electrode, and the data line; and
a common electrode on the passivation layer, the common electrode being excluded in a region of the passivation layer that overlaps the data line.
19 . The LCD of claim 18 , wherein the common electrode includes a plurality of slit patterns.
20 . The LCD of claim 18 , further comprising a common electrode line on a same layer as the gate electrode.
21 . The LCD of claim 20 , wherein the common electrode line is connected to the common electrode through a contact hole in the passivation layer and is configured to apply a common voltage to the common electrode.