Active-matrix liquid crystal display device and method for compensating for defective display lines
US6462792B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2000 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Nov 24, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/136272
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a liquid crystal display device, auxiliary lines are formed under pixel electrodes so as to be parallel to signal or scanning lines. The auxiliary lines are connected to the signal or scanning lines at one point for each pixel. This permits a voltage to be applied to a signal or scanning line if a disconnection defect occurs in the signal or scanning line. The auxiliary line is connected to the signal or scanning line at opposite sides of the defect to form a circuit around the defect. Moreover, if a leakage defect occurs at a crossing point between the scanning line and the signal line, the signal or scanning line may be cut off at both sides of the scanning or signal line, and the auxiliary line forms a circuit that avoids the line leak. Thus, a voltage may be applied to the signal or scanning line by the auxiliary line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.