Method for producing a contactless microcircuit

摘要

The invention relates to a method for manufacturing a contactless microcircuit antenna coil, including steps of: depositing a first electrically conducting layer on a first face of a wafer, and forming in the first layer an antenna coil in a spiral having several turns, including an internal turn coupled to an internal contact pad and an external turn coupled to an external contact pad, the external turn following the entire contour of antenna coil except for a zone through which a conducting path coupling the external contact pad to the external turn can pass, the external and internal contact pads of the antenna coil being formed in a central zone of the external turn, the antenna coil having a bypass zone in which each turn bypasses the external contact pad.

主权项

1. A method for manufacturing a contactless microcircuit antenna coil, comprising steps of:
depositing a first electrically conducting layer on a first face of a wafer, and forming in the first layer an antenna coil in a spiral comprising several turns, comprising an internal turn coupled to an internal contact pad and an external turn coupled to an external contact pad, wherein the external turn follows the entire contour of antenna coil except for a zone through which a conducting path coupling the external contact pad to the external turn can pass, the external and internal contact pads of the antenna coil being formed in a central zone of the external turn, the antenna coil comprising a bypass zone in which each turn passes around the external contact pad in the central zone.