Patent ID: 6873174

Claim:
A method of inspecting an array substrate comprising a plurality of gate and signal lines disposed on the substrate and intersecting perpendicularly with each other, a switching element disposed on each intersecting portion of the gate lines and the signal lines, a pixel capacitance electrically connected to each switching element, a plurality of connection pads into which signals are inputted, and a selection circuit having at least a switch that distributes signals inputted from each of said connection pads to at least one signal line of a signal line group including a plurality of signal lines sequentially, the method of inspecting an array substrate comprising the steps of: writing signals into a first signal line in a first signal line selection period in which said switch selects said first signal line from the signal line group; reading signals from a second signal line in a second signal line selection period following said first signal line selection period in which said switch selects said second signal line from said signal line group; and inspecting a short circuit between said first signal line and said second signal line based upon the read signals.