A touch sensor panel can be constructed on a single surface of a substrate. The panel can be formed as a plurality of distributed RC lines arranged in an array of rows and columns. Each distributed RC line can include alternating connected transistors and metal pads formed on a single surface of the substrate. During operation, the rows and columns are enabled at different times, and the pulse travel times for each row and column in both directions are measured. Equalized travel times are then computed as the sum of the pulse travel times in both directions, and indicate which rows and columns have a finger touching it. The un-equalized pulse travel time data can then be used to determine the relative positions of the fingers within the rows and columns and un-ambiguously determine the positions of all the finger contacts.