07973771 is referenced by 154 patents and cites 30 patents.

A touch sensor is provided that includes an array of discrete electrodes disposed over a touch sensitive area, the electrodes being elongated in a first direction and having a variable width measured in a second direction that is perpendicular to the first direction. A touch location can be determined by simultaneously applying an electrical signal to a plurality of positions on the touch sensor, the touch location along the first direction being determined by comparing a capacitive coupling between the touch implement and the plurality of positions in the touch sensor, and the touch location along the second direction being determined by comparing a resistive coupling between the touch implement and the plurality of positions in the touch sensor.

Title
Touch sensor with electrode array
Application Number
11/734553
Publication Number
7973771 (B2)
Application Date
April 12, 2007
Publication Date
July 5, 2011
Inventor
Bernard O Geaghan
Salem
NH, US
Agent
Steven A Bern
Assignee
3M Innovative Properties Company
MN, US
IPC
G06F 3/041
View Original Source