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EP0347321A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Chip card with a protection layer

Assignee: STMicroelectronics SA
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Filing: 1989-06-15
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Granted: —
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Expires: 2009-06-15
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Abstract

Abstract Translated from French L'invention concerne les cartes portatives contenant des circuits-intégrés, plus généralement connues sous le nom de cartes à puces. The invention relates to portable cards containing integrated circuits, more generally known under the name of smart cards. Pour éviter des perturbations de fonctionnement des cartes à puces dues aux modifications de tension de seuil des transistors du circuit sous l'effet de charges électrostatiques, la présente invention propose de recouvrir la surface des puces d'un film d'une substance conductrice, relié à un potentiel de référence. To avoid disturbances in the operation of smart cards due to changes in threshold voltage of the transistors of the circuit under the effect of electrostatic charges, the present invention proposes to cover the surface of the chips with a film of a conductive substance, connected to a reference potential.

Inventors

  • 👤 Vincent Deveaud
  • 👤 Christophe Canella

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-02 22:25
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/06; G06K19/067; G06K19/07; G06K19/077; G06K19/0772; G06K19/07735; G06K19/07745; H; H10; H10W; H10W42/00; H10W42/60; H10W44/00; H10W44/401

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

FR2143097A1 Cited
FR2370403A1 Cited
DE2713936A1 Cited
EP0080233A1 Cited

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