Chipkarte, Verfahren zur Herstellung einer Chipkarte und Halbleiterchip zur Verwendung in einer Chipkarte

摘要

A chip card has a card body (1) and several contact surfaces (3) made of an electroconductive material and electrically connected to contacts (11) associated to an electronic circuit designed on the semiconductor substrate (10) of a semiconductor chip (4). The contact surfaces (3) are produced as a structured coating on a main surface of the semiconductor chip (4) which faces the electronic circuit. The semiconductor chip (4) produced together with the contact surfaces (3) is inserted into and secured to a cavity of the card body (1) of the chip card in such a way that the contact surfaces (3) are substantially flush with the outer surface (7) of the card body. To ensure a sufficiently high mechanical flexibility, the silicium substrate is preferably less than approximately 100 mu m thick.