Liquid crystal panel and liquid crystal display device having the same
View Patent ↗A liquid crystal panel with an improved picture-quality and an LCD device having the same are disclosed. The liquid crystal panel and the LCD device allows a distance between a pixel electrode and a data line not connected to a thin film transistor and another distance between the pixel electrode and another data line to be asymmetrically formed within a single pixel region. Accordingly, the vertical cross-talk can be minimized, and furthermore picture-quality can be improved.
1. A liquid crystal panel comprising:
a plurality of odd-numbered gate lines and even-numbered gate lines;
a plurality of odd-numbered data lines and even-numbered data lines;
the plurality of the data lines crossing the plurality of the gate lines to define pixel regions;
odd-numbered thin film transistors TFT connected to the odd-numbered gate lines are connected to odd-numbered data lines,
even-numbered thin film transistors TFT connected to odd-numbered gate lines are connected to even-numbered data lines; and
odd-numbered pixel electrodes electrically connected to a drain electrode of the odd-numbered the thin film transistors TFT; and formed to partially overlap with the even-numbered data lines;
wherein the odd-numbered pixel electrodes are not formed to overlap with the odd-numbered data lines;
even-numbered pixel electrodes electrically connected to a drain electrode of the even-numbered the thin film transistors TFT and formed to partially overlap with the odd-numbered data lines;
wherein the even-numbered pixel electrodes are not formed to overlap with the even-numbered data lines;
odd-numbered thin film transistors TFT connected to the even-numbered gate lines are connected to even-numbered data lines,
even-numbered thin film transistors TFT connected to even-numbered gate lines are connected to odd-numbered data lines; and
odd-numbered pixel electrodes electrically connected to a drain electrode of the odd-numbered thin film transistors TFT and form a protrusion to partially overlap with the odd-numbered data lines and a cut-away at the bottom to avoid overlapping with the odd-numbered thin film transistors TFT;
wherein the odd-numbered pixel electrodes are not formed to overlap with the even-numbered data lines;
even-numbered pixel electrodes electrically connected to a drain electrode of the even-numbered thin film transistors TFT and form a protrusion to partially overlap with the even-numbered data lines by the same amount as the protrusion of the odd-numbered pixel electrodes partially overlapping with the odd numbered data lines, wherein the even-numbered pixel electrodes comprise a cut-away at the bottom to avoid overlapping with the even-numbered thin film transistors TFT,
wherein the even-numbered pixel electrodes are not formed to overlap with the odd-numbered data lines;
wherein capacitors formed between the pixel electrodes and the data lines not overlapped with the pixel electrodes have a smaller capacitance than that of capacitors formed between the pixel electrodes and the data line partially overlapped with the pixel electrodes,
wherein the odd-numbered data line formed on the left of the odd-numbered pixel electrodes and the even-numbered data line formed on the right of the odd-numbered pixel electrodes are symmetrically arranged at the same distance.
2. The liquid crystal panel according to claim 1 , wherein the pixel electrodes are separated from the odd-numbered data lines and even-numbered data lines at the same distance, except for the overlapped portions.
3. The liquid crystal panel according to claim 1 , wherein capacitors formed between the pixel electrodes and the data lines not overlapped with the pixel electrodes have a capacitance different from that of capacitors formed between the pixel electrodes and the data lines partially overlapped with the pixel electrodes.
4. The liquid crystal panel according to claim 1 , wherein the thin film transistors are connected to the plurality of the data lines and arranged in a zigzag shape in the pixel regions.
5. A liquid crystal display device comprising:
a plurality of odd-numbered gate lines and even-numbered gate lines;
a plurality of odd-numbered data lines and even-numbered data lines;
the plurality of the data lines crossing the plurality of the gate lines to define pixel regions;
odd-numbered thin film transistors TFT connected to the odd-numbered gate lines are connected to odd-numbered data lines,
even-numbered thin film transistors TFT connected to odd-numbered gate lines are connected to even-numbered data lines;
odd-numbered pixel electrodes electrically connected to a drain electrode of the odd-numbered the thin film transistors TFT and formed to partially overlap with the even-numbered data lines;
wherein the odd-numbered pixel electrodes are not formed to overlap with the odd-numbered data lines;
even-numbered pixel electrodes electrically connected to a drain electrode of the even-numbered the thin film transistors TFT and formed to partially overlap with the odd-numbered data lines;
wherein the even-numbered pixel electrodes are not formed to overlap with the even-numbered data lines;
odd-numbered thin film transistors TFT connected to the even-numbered gate lines are connected to even-numbered data lines,
even-numbered thin film transistors TFT connected to even-numbered gate lines are connected to odd-numbered data lines; and
odd-numbered pixel electrodes electrically connected to a drain electrode of the odd-numbered thin film transistors TFT and form a protrusion to partially overlap with the odd-numbered data lines and a cut-away at the bottom to avoid overlapping with the odd-numbered thin film transistors;
wherein the odd-numbered pixel electrodes are not formed to overlap with the even-numbered data lines;
even-numbered pixel electrodes electrically connected to a drain electrode of the even-numbered thin film transistors TFT and form a protrusion to partially overlap with the even-numbered data lines by the same amount as the protrusion of the odd-numbered pixel electrodes partially overlapping with the odd numbered data lines, wherein the even-numbered pixel electrodes comprise a cut-away at the bottom to avoid overlapping with the even-numbered thin film transistors TFT,
wherein the even-numbered pixel electrodes are not formed to overlap with the odd-numbered data lines;
a gate driver applying a scan signal to the plurality of the gate lines; and
a data driver supplying the plurality of odd-numbered data lines and even-numbered data lines with video signals of different polarities,
wherein capacitors formed between the pixel electrodes and the data lines not overlapped with the pixel electrodes have a smaller capacitance than that of capacitors formed between the pixel electrodes and the data line partially overlapped with the pixel electrodes,
wherein the odd-numbered data line formed on the left of the odd-numbered pixel electrodes and the even-numbered data line formed on the right of the odd-numbered pixel electrodes are symmetrically arranged at the same distance.
6. The liquid crystal display device according to claim 5 , wherein the pixel electrodes are separated from the odd-numbered data lines and even-numbered data lines at the same distance, except for the overlapped portions.
7. The liquid crystal display device according to claim 5 , wherein capacitors formed between the pixel electrodes and the data lines not overlapped with the pixel electrodes have a capacitance different from that of capacitors formed between the pixel electrodes and the data lines partially overlapped with the pixel electrodes.
8. The liquid crystal display device according to claim 5 , wherein the thin film transistors are connected to the plurality of the data lines and arranged in a zigzag shape in the pixel regions.
9. The liquid crystal display device according to claim 5 , wherein the pixel electrodes partially overlapped with even-numbered data lines receive the video signal of a positive polarity (+) and
the pixel electrodes partially overlapped with odd-numbered data lines receive the video signal of a negative polarity (−).
10. The liquid crystal display device according to claim 5 , wherein the pixel electrodes partially overlapped with even-numbered data lines receive the video signal of a negative polarity (−) and
the pixel electrodes partially overlapped with odd-numbered data lines receive the video signal of a positive polarity (+).
11. The liquid crystal display device according to claim 1 , wherein the pixel electrodes are disposed to overlap with only one of odd-numbered data lines and even-numbered data lines.