INTEGRATED CIRCUIT CHIP MADE SECURE AGAINST THE ACTION OF ELECTROMAGNETIC RADIATION

摘要

The invention concerns a chip (5) for portable object in particular in card format, comprising a silicon substrate layer (12) at the active surface (13) of which are integrated circuits defining a central processing unit and storage units. The invention is characterised in that the chip (3) further comprises physical means (17, 19, 20) for protection against the action of electromagnetic radiation of the infrared whereof the wavelength is greater than 1 mu m. The invention is particularly applicable to chip cards.