Patent ID: 6621486
Filing Date: 2003-09-16
Classification: G06F

Abstract:
Apparatus for a touch sensitive panel that allows reduction in width of a wire routing zone, the apparatus comprising:a first input layer and a second input layer that is spaced apart from, is parallel to and lies below the first input layer, each of the first and second input layers having a boundary, including a left side, a right side, a top side and a bottom side; first and second electrodes, positioned adjacent to the left side and the right side, respectively, of the first input layer, the first and second electrodes being connected by each of a first sequence of two or more electrically resistive paths in the first input layer; third and fourth electrodes, positioned adjacent to the top side and the bottom side, respectively, of the second input layer, the third and fourth electrodes being connected by each of a second sequence of two or more electrically resistive paths in the second input layer; a first tail including first and second signal carrying wires, located in a routing zone adjacent to the input layer boundaries, where first ends of the first and second wires are connected to the first and third electrodes, respectively, and second ends of the first and second wires are connected to a signal analyzer for electrode signals; and a second tail, spaced apart from the first tail and including third and fourth signal carrying wires, located in the routing zone, where first ends of the third and fourth wires are connected to the second and fourth electrodes, respectively, and second ends of the third and fourth wires are connected to a first voltage source and to a second voltage source, respectively.