Patent ID: 7317325

Claim:
A method for identifying a location of a short between two or more signal lines on a substrate having a plurality of thin film transistors and a plurality of pixels associated with the thin film transistors, comprising: locating the two or more signal lines having the short by performing a first signal test pattern; locating one or more defective pixels disposed between the two or more signal lines having the short; and identifying a location of the defective pixels as the location of the short, wherein the first signal test pattern comprises: opening the gates of the thin film transistors; applying a first voltage to odd numbered data lines and a second voltage to even numbered data lines; closing the gates of the thin film transistors; applying the second voltage to the odd numbered data lines and the first voltage to the even numbered data lines; and determining whether the voltage of each pixel connected to each even numbered data line is substantially the same and whether the voltage of each pixel connected to each odd numbered data line is substantially the same.