Liquid crystal display device
View Patent ↗Disclosed are a liquid crystal display device and a testing method thereof. The liquid crystal display device includes a plurality of scan lines, and a plurality of data line sets crossing the scan lines, where each data line set includes a first data line, a second data line, and a third data line. The device also includes a shorting bar for the data lines, a first data switch control line and a second data switch control line. Through holes are not used to connect the data lines and the shorting bar, thus disadvantages of display devices caused by defects in through holes is eliminated. Additionally, the area for testing structures is decreased, so that a small-sized liquid crystal display devices can be produced.
1. A liquid crystal display device, comprising:
a plurality of scan lines;
a plurality of data line sets intersecting the scan lines, wherein each data line set comprises a first data line, a second data line, a third data line;
a plurality of pixel units formed near intersections of the scan lines and the data lines,
wherein the first data line in each data line set controls pixel units having a first color, the second data line in each data line set controls pixel units having a second color, and the third data line in each data line set controls pixel units having a third color;
a data line shorting bar;
a first data switch control line;
a second data switch control line,
wherein the first data line in each data line set is connected with the data line shorting bar,
wherein the first data switch control line intersects the second data line in each data line set;
a first switch element formed at each intersection of the second data lines and the first data switch control line, wherein a gate electrode of the first switch element is arranged on the first data switch control line, a source electrode of the first switch element is connected with the data line shorting bar, and a drain electrode of the first switch element is connected with the second data line, and
wherein the second data switch control line intersects the third data line in each data line set; and
a second switch element formed at each intersection of the third data lines and the second data switch control line, wherein a gate electrode of the second switch element is arranged on the second data switch control line, a source electrode of the second switch element is connected with the data line shorting bar through the first switch element, and a drain electrode of the second switch element is connected with the third data line.
2. The liquid crystal display device of claim 1 , further comprising:
a scan line shorting bar;
a switch control line for the scan lines; and
a plurality of switch elements for the scan lines,
wherein gate electrodes of the switch elements for the scan lines are arranged on the switch control line for the scan lines, wherein source electrodes of the switch elements are connected with the scan line shorting bar, and wherein drain electrodes of the switch elements are connected with the plurality of scan lines.
3. The liquid crystal display device of claim 2 , wherein the drain electrodes of the switch elements are connected with the scan lines via through holes.
4. The liquid crystal display device of claim 1 , wherein the source electrode of the second switch elements are connected with the drain electrodes of the first switch elements, and are connected with the data line shorting bar through the first switch elements.
5. The liquid crystal display device of claim 1 , further comprising a third data switch control line, wherein each data line set further comprises a fourth data line, and the fourth data line in each data line set controls pixel units with a fourth color,
wherein the third data switch control line intersects the fourth data line in each data line set, and a third switch element is formed at each intersection of the fourth data line and the third data switch control line, and
wherein a gate electrode of the third switch element is arranged on the third data switch control line, a source electrode of the third switch element is connected with the drain electrode of the second switch element, and a drain electrode of the third switching element is connected with the fourth data line.
6. The liquid crystal display device of claim 1 , further comprising at least one of the following test terminals:
a test terminal connected with the data line shorting bar; and
test terminals connected with the switch control lines for the data lines.
7. The liquid crystal display device of claim 2 , further comprising at least one of the following test terminals:
a test terminal connected with the scan line shorting bar; and
a test terminal connected with the switch control line for the scan lines.
8. The liquid crystal display device of claim 1 , wherein the first data line in each data line set is directly connected with the data line shorting bar.