Test device for liquid crystal display device and test method thereof
View Patent ↗A test device for a liquid crystal display device includes a first shorting bar, a first, a second and a third control line, transmission lines and thin film transistor switch elements; in which the gate electrodes of thin film transistor switch element are respectively arranged on the first, the second and the third control line; the data lines are respectively connected to the first, the second and the third control line via the drain electrodes of thin film transistor switch elements, in which data lines for controlling the blue pixel units are connected to the first control line, data lines for controlling the red pixel units are connected to the second control line, data lines for controlling the green pixel units are connected to the third control line; and the source electrodes of multiple thin film transistor switch elements are connected to the first shorting bar via multiple transmission lines.
1. A test device for a liquid crystal display device, the liquid crystal display device comprising a plurality of scanning lines and a plurality of data lines that intersect perpendicularly, and a plurality of pixel units defined by the plurality of scanning lines and the plurality of data lines, the pixel units comprising red pixel units, green pixel units and blue pixel units;
the test device comprising a data line test means, wherein the data line test means comprises a first shorting bar, a first control line, a second control line, a third control line, a plurality of transmission lines and a plurality of thin film transistor switch elements; wherein
gate electrodes of the plurality of thin film transistor switch elements of the data line test means are respectively arranged on the first control line, the second control line and the third control line;
the plurality of data lines are respectively connected to the first control line, the second control line and the third control line via drain electrodes of the plurality of thin film transistor switch elements, wherein all the data lines for controlling the blue pixel units are connected to the first control line, and all the data lines for controlling the red pixel units are connected to the second control line, and all the data lines for controlling the green pixel units are connected to the third control line; and
source electrodes of the plurality of thin film transistor switch elements of the data line test means are respectively connected to the first shorting bar via a plurality of transmission lines.
2. The test device for the liquid crystal display device according to claim 1 , wherein three thin film transistor switch elements of the data line test means, which are connected with the data lines of three adjacent pixel units, have the source electrodes connected to the first shorting bar via a same transmission line.
3. The test device for the liquid crystal display device according to claim 2 , wherein the three adjacent pixel units are a red pixel unit, a green pixel unit and a blue pixel unit adjacent with each other.
4. The test device for the liquid crystal display device according to claim 1 , further comprising a scanning line test means comprising a second shorting bar, a fourth control line, a plurality of transmission lines and a plurality of thin film transistor switch elements; wherein
the gate electrodes of the plurality of thin film transistor switch elements of the scanning line test means are arranged on the fourth control line; and
the plurality of scanning lines are connected to the fourth control line respectively via drain electrodes of the plurality of thin film transistor switch elements of the scanning line test means, and the source electrodes of the plurality of thin film transistor switch elements of the scanning line test means are connected to the second shorting bar respectively via a plurality of transmission lines.
5. The test device for the liquid crystal display device according to claim 1 , further comprising a scanning line test means comprising a second shorting bar, a plurality of transmission lines and a plurality of thin film transistor switch elements; wherein
the gate electrodes of the plurality of thin film transistor switch elements of the scanning line test means are respectively arranged on the first control line, the second control line and the third control line; and
the drain electrode of one thin film transistor switch element of the scanning line test means on the first control line, the drain electrode of one thin film transistor switch element of the scanning line test means on the second control line, and the drain electrode of one thin film transistor switch element of the scanning line test means on the third control line are connected to a same scanning line, and the source electrodes of which are connected to the second shorting bar via a same transmission line.
6. The test device for the liquid crystal display device according to claim 1 , wherein a width of the second control line at intersecting portion of the second control line and the data line is smaller than the width of the second control line at non-intersecting portion.
7. The test device for the liquid crystal display device according to claim 1 , further comprising a test terminal connected to the first control line, a test terminal connected to the second control line and a test terminal connected to the third control line.
8. The test device for the liquid crystal display device according to claim 1 , further comprising a test terminal connected to the first shorting bar.
9. The test device for the liquid crystal display device according to claim 1 , wherein the first shorting bar, the source electrodes and the drain electrodes of the plurality of thin film transistor switch elements of the data line test means, and the plurality of data lines are made of the same material, and are formed synchronously.
10. The test device for the liquid crystal display device according to claim 4 , further comprising a test terminal connected to the second shorting bar.
11. The test device for the liquid crystal display device according to claim 5 , further comprising a test terminal connected to the second shorting bar.
12. The test device for the liquid crystal display device according to claim 4 , wherein the drain electrodes of the plurality of thin film transistor switch elements of the scanning line test means are respectively connected to the scanning lines by via holes.
13. The test device for the liquid crystal display device according to claim 5 , wherein the drain electrodes of the plurality of thin film transistor switch elements of the scanning line test means are respectively connected to the scanning lines by via holes.
14. The test device for the liquid crystal display device according to claim 4 , further comprising a test terminal connected to the fourth control line.
15. The test device for the liquid crystal display device according to claim 5 , wherein the first shorting bar, the second shorting bar, the source electrodes and the drain electrodes of the plurality of thin film transistor switch elements of the scanning line test means and the plurality of data lines are made of the same material, and are formed synchronously.