Patent ID: 9104283
Filing Date: 2015-08-11
Classification: G06F

Abstract:
1. A human-machine interface device having a transparent detection zone and an access zone, said device comprising: a surface having electrodes made from a conductive transparent material in the transparent detection zone; conductive connecting tracks arranged in the access zone and connected to the surface having electrodes; linking tracks made from a transparent conductive material for linking the conductive connecting tracks to electrodes of the surface having electrodes; a first conductive surface made from transparent material in the transparent detection zone, utilized as a guard to eliminate parasitic capacitances for the surface having electrodes; said conductive connecting tracks are arranged in the access zone in a sandwich between a second and a third conductive surfaces utilized as second and third guards to eliminate parasitic capacitances for said conductive connecting tracks, and the linking tracks are arranged so that when a linking track borders at least one electrode on the transparent detection zone, said linking track is positioned between at least two electrodes, so that all linking tracks in the transparent detection zone are situated between electrodes.