SMART CARD AND METHOD OF MANUFACTURING SMART CARD

摘要

An integrated circuit includes a detector circuit including a sensor configured to sense an alteration to a physical characteristic of a substrate and to generate an alarm signal indicating such alteration and a circuit configured to respond to the generation of the alarm signal by implementing countermeasures. A smart card may include such a circuit to counteract a back side attack.

主权项

1. A smart card comprising:
a substrate comprising a front side and a back side and having a first height between the front side and the back side; a circuit layer disposed on the front side of the substrate and including an analog block that includes a plurality of analog circuits and a digital block that includes a plurality of digital circuits; and at least one trench capacitor disposed in the substrate and having a second height extending from the front side of the substrate, wherein the second height is smaller than the first height and may be modified due to a back side attack on the substrate before other circuitry on the smart card is affected by the back side attack.