Secure integrated circuit chip with conductive shield

Details Secure integrated circuit chip with conductive shield Secure integrated circuit chip with conductive shield

H - Electricity

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L

356/134

H01L 27/04 (2006.01) G06F 21/00 (2006.01) G11C 7/24 (2006.01) H01L 23/58 (2006.01) H01L 27/02 (2006.01) G06F 1/00 (2006.01)

Patent

CA 2007469

An integrated circuit chip containing a secure area in which secure data is processed and/or stored, includes a semiconductive layer containing diffusions defining circuit element components; a first conductive layer coupled to the semiconductive layer to interconnect the components to thereby define circuit elements for distributing, storing processing and/or affecting the processing ofsecure data; and a second conductive layer overlying the circuit elements to thereby define a secure area in which the circuit elements are shielded from inspection, and coupled to the circuit elements for conducting to the circuit elements a predetermined signal that is essential to an intended function of theshielded circuit elements, whereby removal of the second conductive layer will prevent the predetermined essential signal from being provided to the circuit elements and thereby prevent the intended function.

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