Patent ID: 6593916
Filing Date: 2003-07-15
Classification: G06F

Abstract:
A position touchscreen comprisinga substrate having a resistive surface bounded by four peripheral edges which terminate at four corners, said resistive surface having a touch area interior to said edges, a series resistor chain proximate each of said peripheral edges for creating electric fields across said touch area, each resistor chain comprising a plurality of conductive electrodes arranged in series with resistive regions of said surface therebetween, each electrode having an inside portion facing said touch area, the inside portions of adjacent electrodes being separated by junctions, and a linear array of insulating regions in said resistive surface adjacent to each resistor chain between said resistor chain and said touch area, said linear array of insulating regions acting as electrical insulators, each said insulating regions being separated by gaps where said resistive surface is intact, wherein a plurality of gaps are positioned between a majority of each of said inside portions and said touch area thereby forming a plurality of conductive paths per said majority of inside portions across said touch area.