Self-destruct nonvolatile memory chip and preparation method thereof

Abstract

The invention discloses a self-destruct nonvolatile memory chip and a preparation method thereof. The self-destruct nonvolatile memory chip comprises a memory chip and a self-destruct function layer formed thereon, wherein the self-destruct function layer sequentially comprises an insulating layer, a heating layer, a passivation layer and bonding pad metal from the bottom up. According to the invention, the heating layer is adopted to be connected with an external self-destruct circuit, the self-destruct circuit sends pulse ignition signals to the heating layer when judging that self-destruction is required to be carried out, the heating layer generates an electric heat effect, the temperature rises instantaneously, the memory chip located below the heating layer is heated, a tolerable temperature of the internal structure of the memory chip is exceeded, so that the memory chip is physically destructed, the memory chip is enabled to have irreversible structural and functional damages, and physical hardware self-destruction of information in the memory chip is realized. Compared with an existing memory chip, the self-destruct nonvolatile memory chip disclosed by the invention has the advantages of small memory chip change, high output, simple process, low cost and the like. The self-destruct nonvolatile memory chip has a flexible structure and extensive applicability.

Description

technical field [0001] The invention relates to information security and self-destruction technology, in particular to a self-destruction non-volatile memory chip and a preparation method thereof. Background technique [0002] In recent years, with the development of big data and Internet technology, a large number of mobile devices have been widely used in civilian and military fields as network nodes and network terminals. These removable devices store a large amount of sensitive information. When the device is lost or in a special environment, the safe destruction of information to prevent leakage of user information has become a major problem in the field of information self-destruction. Traditional self-destruction methods are divided into two types: software self-destruction and hardware self-destruction. Among them, the software self-destruction is carried out by using software to erase the data in the storage medium, while the hardware self-destruction usually adopt...

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Problems solved by technology

Therefore, it is difficult to adapt to the self-destruction requirements...

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