Liquid crystal display
View Patent ↗In a liquid crystal display according to an exemplary embodiment of the present invention, a shielding electrode applied with the same voltage as a common voltage and overlapping a data line is not formed. Instead, an opening is formed at a position corresponding to a data line disposed proximate to a sub-pixel charged with a relatively low voltage. In this manner, luminance deterioration of a liquid crystal display may be reduced or prevented, and a short defect between the shielding electrode and the data line may also be prevented.
1. A liquid crystal display having a plurality of pixels arranged at least approximately in a matrix, the liquid crystal display comprising:
a plurality of pixel electrodes disposed on a first substrate and each including a first sub-pixel electrode and a second sub-pixel electrode;
a plurality of data lines connected to the pixel electrodes;
a common electrode disposed on a second substrate facing the first substrate, the common electrode including a plurality of openings; and
a liquid crystal layer disposed between the first substrate and the second substrate,
wherein the openings are each disposed at a position corresponding to at least a portion of one of the data lines, and are each disposed proximate to at least one of the second sub-pixel electrodes, the openings having edges extending beyond edges of their corresponding data lines by a distance of about 3 μm to about 6 μm, and
the common electrode disposed in one pixel of three pixels that are adjacent in a pixel column direction does not have the opening.
2. The liquid crystal display of claim 1 , wherein
the magnitude of the voltage charged to the liquid crystal layer corresponding to the second sub-pixel electrode is smaller than the magnitude of the voltage charged to the liquid crystal layer corresponding to the first sub-pixel electrode wherein each of the pixels further comprises first and second capacitors, the first and second capacitors respectively comprising one of the first and one of the second sub-pixel electrodes, the first and second capacitors configured to maintain differing charge levels.
3. The liquid crystal display of claim 2 , wherein
the common electrode has a plurality of domain dividing means, and
the openings are connected to the domain dividing means.
4. The liquid crystal display of claim 1 , wherein the one of three pixels without the openings represents a green color.
5. The liquid crystal display of claim 4 , wherein
the liquid crystal display is driven while a polarity is changed per pixel column.
6. The liquid crystal display of claim 5 , further comprising:
a plurality of first thin film transistors connected to the first sub-pixel electrodes;
a plurality of second thin film transistors connected to the second sub-pixel electrodes;
a plurality of third thin film transistors connected to the second sub-pixel electrodes;
a plurality of first gate lines connected to the first and second thin film transistors;
a plurality of second gate lines connected to the third thin film transistors; and
a capacitor electrode line including a capacitor electrode overlapping the drain electrode of the third thin film transistor.
7. The liquid crystal display of claim 1 , wherein
the common electrode includes a plurality of domain dividing means, and
the openings are connected to the domain dividing means.
8. The liquid crystal display of claim 1 , wherein the liquid crystal display is driven while a polarity is changed per pixel column.
9. The liquid crystal display of claim 8 , further comprising
a plurality of first thin film transistors connected to the first sub-pixel electrodes;
a plurality of second thin film transistors connected to the second sub-pixel electrodes;
a plurality of third thin film transistors connected to the second sub-pixel electrodes;
a plurality of first gate lines connected to the first and second thin film transistors;
a plurality of second gate lines connected to the third thin film transistors; and
a capacitor electrode line including a capacitor electrode overlapping the drain electrode of the third thin film transistor.
10. The liquid crystal display of claim 1 , further comprising:
a plurality of first thin film transistors connected to the first sub-pixel electrodes;
a plurality of second thin film transistors connected to the second sub-pixel electrodes;
a plurality of third thin film transistors connected to the second sub-pixel electrodes;
a plurality of first gate lines connected to the first and second thin film transistors;
a plurality of second gate lines connected to the third thin film transistors; and
a capacitor electrode line including a capacitor electrode overlapping the drain electrode of the third thin film transistor.