Patent ID: 8907695

Claim:
A detecting method of abnormality of a differential signal receiving terminal of a liquid crystal displaying module, the receiving terminal comprising a first group of differential signal line having LVDS 0 + and LVDS 0 −, and a second group of differential signal line having LVDS 1 + and LVDS 1 −, the detecting method comprising: inputting high level signals to LVDS 0 +, LVDS 0 −, LVDS 1 +, LVDS− in order, in which only one high level signal is inputted to one of the differential signal lines each single time and the other differential signal lines are kept in high impedance states simultaneously; and receiving feedback signals from all the differential signal lines and determining whether the differential signal lines of detecting units are abnormal or not according to the received feedback signals, the abnormality of the differential signal lines comprising a terminal resistive open of each group of differential signal line, a short circuit between two groups of the differential signal lines, and a short circuit of each group of differential signal line to ground or to a power supply caused by abnormal power supplying sequence.