Patent ID: 6661408
Filing Date: 2003-12-09
Classification: G06F

Abstract:
A current sensing type touch screen capable of eliminating noise signals, comprising a glass layer, a conductive membrane layer, a linearization pattern layer, an isolation layer, a five wire silver printing layer and a tail cable; wherein:four conductive wires are connected to four ends of the linearization pattern layer and another four ends are connected to a-controller, the fifth conductive wire having one end suspended and another end linked to the controller; the four conductive wires are printed on one side of the glass layer and the fifth conductive wire is printed on another side of the glass layer; and the fifth conductive wire detects noise signals which affect the controller, and the controller uses the noise signals conductive wire to eliminate interference caused by the noise signals in the controller thereby forming a five wire current sensing type touch screen with offset noise signals.