Liquid crystal display

1. A liquid crystal display comprising:

a first substrate;

a first signal line formed on the first substrate and extending in a first direction;

a second signal line formed on the first substrate and including a curved portion and a rectilinear portion connected to the curved portion, wherein the rectilinear portion intersects the first signal line and the second signal line is a data line;

a first thin film transistor connected to the first signal line and the second signal line;

a pixel electrode connected to the first thin film transistor;

a second substrate facing the first substrate;

a common electrode formed on the second substrate, the common electrode comprising an opening facing the second signal line, the opening extending in a lengthwise direction of the second signal line and parallel with the second signal line and including a curved portion which is a same shape as that of the second signal line; and

a third signal line overlapping the pixel electrode, extending substantially parallel to the first signal line, and separated from the first signal line wherein the thin film transistor comprises a terminal connected to the pixel electrode and overlapping the third signal line, wherein the third signal line comprises a first curved branch extending substantially parallel to the curved portion of the second signal line.

2. The liquid crystal display of claim 1 , wherein the pixel electrode comprises at least two sub-pixel electrodes and at least one of the sub-pixel electrodes is connected to the first thin film transistor.

3. The liquid crystal display of claim 2 , wherein the sub-pixel electrodes comprise first and second sub-pixel electrodes disposed opposite each other with respect to the second signal line.

4. The liquid crystal display of claim 3 , further comprising a second thin film transistor connected to the first and the second signal lines and the second sub-pixel electrode, wherein the first sub-pixel electrode is connected to the first thin film transistor.

5. The liquid crystal display of claim 4 , wherein the third signal line further comprises a second curved branch extending substantially parallel to the curved portion of the second signal line, wherein the first and the second branches of the third signal line are disposed opposite each other with respect to the second signal line.

6. The liquid crystal display of claim 5 , wherein the first and the second branches of the third signal line overlap the first and the second sub-pixel electrodes, respectively.

7. The liquid crystal display of claim 6 , wherein the first and the second sub-pixel electrodes comprise edges disposed on the first and the second curved branches of the third signal line, respectively.

8. The liquid crystal display of claim 7 , wherein the opening has an edge disposed between an edge of the second signal line and an edge of the first or the second branch of the third signal line adjacent thereto.

9. The liquid crystal display of claim 8 , wherein the first and the second sub-pixel electrodes are connected to each other.

10. The liquid crystal display of claim 9 , wherein the pixel electrode further comprises a pixel connection connecting the first and the second sub-pixel electrodes and intersecting the curved portion of the second signal line.

11. The liquid crystal display of claim 1 , wherein the curved portion of the second signal line comprises at least two rectilinear portions alternately making clockwise and counterclockwise angles of about 45 degrees.

12. The liquid crystal display of claim 1 , further comprising a tilt direction determining member disposed on the first or the second substrate and including a curved portion.

13. The liquid crystal display of claim 12 , wherein the tilt direction determining member includes a cutout provided at the pixel electrode or the common electrode.

14. The liquid crystal display of claim 12 , wherein the tilt direction determining member includes a protrusion provided on the pixel electrode or the common electrode.