Structures for preventing reverse engineering of integrated circ

Details Structures for preventing reverse engineering of integrated circ Structures for preventing reverse engineering of integrated circ

1995-06-07

1998-10-13

Meier, Stephen

Active solid-state devices (e.g., transistors, solid-state diode

Field effect device

Having insulated electrode

257635, 257637, 257 59, H01L 2976, H01L 2994, H01L 31062, H01L 31113

Patent

active

058215824

ABSTRACT:
Embodiments according to the present invention provide tamper resistant structures which make it more difficult to reverse engineer integrated circuits. In one embodiment, a tamper resistant structure on a passivation layer leaves portions of the passivation layer exposed. Mechanical or chemical removal of the tamper resistant structure damages exposed portions of the passivation layer and makes reverse engineering difficult. Other embodiments of the tamper resistant structure include patterned and unpatterned structures containing hard materials, chemically resistant materials, amalgams, fibrous materials, and/or meshes attached to a passivation layer. Tamper resistant structures can also be provided between layers of the active circuitry.

REFERENCES:
patent: 4030952 (1977-06-01), Luce et al.
patent: 5030796 (1991-07-01), Swanson et al.
patent: 5070386 (1991-12-01), Imura
patent: 5109267 (1992-04-01), Koblinger et al.
patent: 5231299 (1993-07-01), Ning et al.
patent: 5308682 (1994-05-01), Morikawa
patent: 5337274 (1994-08-01), Ohji
patent: 5369299 (1994-11-01), Byrne
patent: 5468990 (1995-11-01), Daum
Ghandhi, VLSI Fabrication Principles, John Wiley, 1983, pp. 494-495.
Research Disclosure (author unknown), "New Encapsulants for Computer Chip and Circuit Protection," No. XP 000134193, Kenneth Mason Publications, Jul., 1990, p. 588.

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