Patent ID: 9041659
Filing Date: 2015-05-26
Classification: G06F

Abstract:
1. A method for testing a capacitive based digitizer to determine a defect in electrical connectivity of the digitizer, wherein the digitizer includes a sensor grid formed from a first set of parallel conductive elements and a second set of parallel conductive elements patterned on one or more layers of a substrate, wherein the second set is patterned orthogonally from the first set to form the sensor grid and wherein all the conductive elements from both the first and the second set are patterned on the substrate and electrically insulated from each other, the method comprising: providing an input signal on one or more first conductive elements of the sensor grid; detecting output signals in a plurality of second conductive elements of the sensor grid responsive to the input signal in the at least one first conductive element, the plurality of second conductive elements being other than the one or more first conductive elements; determining a defect in electrical connectivity in the sensor grid based on the output signals, wherein at least the providing, detecting and determining is performed autonomously by the digitizer; and identifying a conductive element of the sensor grid with the defect in electrical connectivity based on the output signals.