Patent ID: 7808267

Claim:
A substrate-testing module configured to detect a possible defect in a manufactured and under-test thin film transistor (TFT) substrate, where said TFT substrate-under-test (TSUT) includes a plurality of successive data lines extending adjacent one to the next, a plurality of gate lines in respective gate line regions and crossing with the data lines, and a plurality of pixel electrodes each driven by a respective TFT switching device that is responsive to control and drive signals respectively provided on a corresponding gate line and data line, where each gate line region of the TSUT includes at least first and second co-linear sub-gate lines that are manufactured for not connecting to each other, where the TSUT includes a first gate driver coupled to drive the first sub-gate lines but not the second sub-gate lines and a second gate driver coupled to drive the second sub-gate lines but not the first sub-gate lines, the substrate-testing module comprising: a data signal generator adapted to supply test data signals to the data lines; an operation signal generator adapted to supply operation signals to the first and second gate drivers; and an electrical detector adapted to electrically measure respective voltage levels of at least two adjacent ones of the pixel electrodes after the data signal generator has supplied corresponding test data signals to the data lines of the at least two adjacent pixel electrodes and the operation signal generator has supplied operation signals to the first and second gate drivers so as to activate the respective TFT switching devices of the at least two adjacent pixel electrodes.