CN109994134B

CN109994134B - Single-chip solid state disk capable of being destroyed in blasting mode

Info

Publication number: CN109994134B
Application number: CN201910273981.XA
Authority: CN
Inventors: 金瑞; 张欢
Original assignee: Shanghai V&g Information Technology Co ltd
Current assignee: Shanghai V&g Information Technology Co ltd
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2024-02-09
Anticipated expiration: 2039-04-04
Also published as: CN109994134A

Abstract

The invention provides a single-chip solid state disk capable of being blasted and destroyed, which comprises a main control chip and a storage chip, wherein a miniature silicon-based detonator and a related trigger circuit are integrated in the main control chip, the internal main control chip can be controlled by an upper computer to trigger or an independent external interface to trigger and detonate, so that physical blasting is realized, and a NAND Flash storage chip and all data in the NAND Flash storage chip are blasted. The invention can make the data destruction in the solid state disk more thorough and safe; the internal selectable integrated detonator blasting triggering control chip can realize diversified blasting triggering control through a program, is more flexible and convenient to use and can be suitable for various different application occasions.

Description

Single-chip solid state disk capable of being destroyed in blasting mode

Technical Field

The invention relates to the technical field of research, development and manufacturing of single-chip solid state disks, in particular to a single-chip solid state disk integrated with a silicon-based micro detonator and capable of realizing blasting destruction.

Background

Hard disks are one of the main storage media of computer systems, and conventional mechanical hard disks employ magnetic disks as the storage media. Compared with the traditional mechanical hard disk, the Solid State Disk (SSD) is a hard disk made of a solid state electronic memory chip array, and mainly comprises a control unit and a memory unit (FLASH chip and DRAM chip). Because of the characteristics of quick reading and writing, light weight, low energy consumption, small volume and the like, the method has entered the mainstream line of the storage market at present and has a trend of replacing the traditional mechanical hard disk.

Packaging is the process of assembling an integrated circuit into a chip end product, simply by placing the integrated circuit die on a substrate or leadframe that serves as a carrier, bringing the die out, and then fixedly packaging the die as a unit. The package not only can place, fix, seal, protect the chip and enhance the electrothermal performance, but also is a bridge for communicating the world inside the chip with external circuits. Compared with the traditional product package for realizing single function, the System In Package (SiP) encapsulates a plurality of chips with different functions and combines with other active or passive electronic components, thereby forming a system or subsystem. The main advantages are: high integration, miniaturization, high performance, low power consumption, low cost, and the like.

The single-chip solid state disk mainly meets the embedded application scenes of high integration, miniaturization and high reliability requirements, and a wafer-level main control chip, a storage chip, a cache chip and other electronic components are processed into a chip through a system-in-package (SiP) technology, so that the chip is small in appearance, but almost all functions of different types of solid state disks such as a common 2.5-inch solid state disk, mSATA (serial advanced technology attachment) or M.2 can be realized.

At present, in the field of security and confidentiality of a single-chip solid state disk, the main means involved in the rapid destruction of confidential data are rapid erasure and physical destruction, the former is to realize the rapid erasure of the data through the function of a main control, and the latter is to destroy the function of a chip through a high-voltage breakdown mode, but in a specific environment, the two modes cannot ensure that the data can be destroyed by 100% safely.

Disclosure of Invention

Aiming at the technical problems, the invention provides a single-chip solid state disk capable of being destroyed by blasting, namely, a silicon-based miniature detonator is integrated in the single-chip solid state disk, and when data are required to be destroyed, a physical blasting mode is used for thoroughly blasting the NAND Flash memory chip and secret-related data therein. The specific technical scheme adopted is as follows:

a single-chip solid state disk capable of being blasted and destroyed comprises an internal main control chip, a storage chip, a silicon-based miniature detonator, a trigger circuit and an external blasting trigger interface;

when data destruction is required, the internal main control chip is controlled by an external signal to trigger and detonate the silicon-based miniature detonator, or the external signal is controlled by the external explosion triggering interface to detonate the silicon-based miniature detonator.

The technical scheme comprises a main control chip and a storage chip which are key components of the solid state disk, and a silicon-based miniature detonator and a related trigger circuit for blasting destruction are integrated at the same time, and can be triggered by the main control chip or an external independent interface to realize blasting.

Further, the silicon-based miniature detonator is a miniature silicon-based blasting device based on micro-electro-mechanical system (MEMS) technology and technology, and comprises a transduction element, a charging structure and the like.

The implementation scheme and the working principle of the invention are further described as follows:

the invention relates to a single-chip solid state disk, wherein a silicon-based miniature detonator is integrated inside, and the NAND Flash chip and data therein can be thoroughly destroyed by physical blasting on the premise of needing data destruction.

The existing single-chip solid state disk is mainly characterized in that a wafer-level main control chip, a memory chip, a cache chip and other electronic components are directly packaged into an independent and highly integrated small-size chip through a system-level packaging technology (SiP), a 3D stacking technology and other packaging technologies, and internal interconnection is realized through a packaging substrate by adopting processes such as wire bonding, flip chip bonding or SMT. The invention integrates the silicon-based micro detonator and the related trigger control circuit on the basis, and the appearance, the material and the interconnection structure of the silicon-based detonator are completely similar to those of a common integrated circuit silicon chip, so that the complete compatibility of the packaging process can be realized.

The signal implementation is described, and when the data destruction requirement exists, the upper computer can control the internal main control chip to trigger or the independent external interface to trigger the detonation. If the control requirement is more complicated, an independent control chip can be integrated to perform trigger control.

From the basic function, the invention is a solid state disk, and the inside of the solid state disk comprises a main control chip, a NAND Flash memory chip and a DRAM cache chip (optional), so that the storage, the reading and the writing of data can be realized;

from the appearance, the invention is an independent and packaged chip, the packaging form is not limited, and the invention can be plastic packaging, ceramic packaging or other types of packaging, and has a uniform external interface;

the invention internally comprises the miniature silicon-based detonator and the related trigger circuit, can be triggered by a main control or an independent external interface, realizes physical blasting, and explodes the NAND Flash memory chip and secret-related data therein.

The following technical scheme is mainly protected:

the high-integration single-chip solid state disk internally comprises a main control chip, a NAND Flash memory chip and a DRAM cache chip (optional), and can realize data storage and reading and writing; the appearance is an independent and packaged chip, the packaging form is not limited, and the chip has a uniform external interface; the micro-silicon-based detonator and the related trigger circuit are contained in the NAND Flash memory chip, and can be triggered by a main control or an independent external interface to realize physical blasting and destroy the NAND Flash memory chip and secret-related data therein.

The beneficial effects of the invention are as follows:

1. the micro silicon-based detonator is integrated in the single-chip solid state disk, so that physical blasting can be realized to destroy the NAND Flash memory chip and secret-related data in the NAND Flash memory chip, and the destroying mode is more thorough and safer;

2. the upper computer can control the main control to trigger or the independent external interface to trigger and detonate, so that the device can adapt to various application occasions, and can be selectively integrated with a trigger control chip to realize more complex control requirements.

Drawings

FIG. 1 is a comparative diagram of a common single-chip solid state disk and a manufacturing flow of the present invention;

FIG. 2 is a block diagram of the main functions of the present invention;

FIG. 3 is a schematic diagram of an interconnect front view of the present invention;

fig. 4 is a schematic top view of an interconnect of the present invention.

Detailed Description

The invention is further described below with reference to examples shown in the drawings in which:

referring to fig. 1, a common single-chip solid state disk is to directly package a wafer-level main control chip, a memory chip, a cache chip (optional) and other electronic components into an independent and highly integrated small-size chip through a system-level packaging technology (SiP) and a 3D stacking technology, and internal interconnection is realized through a packaging substrate and a Wire Bonding process. The implementation mode of the invention is not different from the common single-chip solid state disk, but the silicon-based detonator and the related trigger circuit are integrated on the basis, and the function of physical blasting is additionally realized.

Referring to fig. 2, the invention is the same as a common single-chip solid state disk, and the important components of the invention comprise a main control chip, a storage chip, a cache chip (optional) and other modules. Meanwhile, the invention additionally integrates the silicon-based detonator and the trigger control chip (optional), thereby realizing the function of physical blasting.

Referring to fig. 3 and fig. 4, the internal structure of the invention is a front view schematic diagram and a top view schematic diagram, a wafer-level main control chip, a NAND memory chip, a DRAM cache chip and the like are stuck to a packaging substrate after being cut into single silicon chips, internal interconnection is realized through gold wire welding, a silicon-based detonator is generally placed above the NAND memory chip and is also interconnected through gold wire welding in order to realize the blasting effect, other passive components such as resistors, capacitors and the like are interconnected with the substrate through an SMT mode, finally the substrate is placed into a mold, injection molding and packaging are carried out by using plastic packaging glue, and then the single finished chip is finally processed after the steps of laser printing, ball planting, cutting and forming and the like.

Claims

1. The utility model provides a single chip solid state hard disk that can explode and destroy, includes inside main control chip, memory chip, its characterized in that includes: the device comprises a silicon-based miniature detonator and a trigger circuit, and an external blasting trigger interface;

2. The single-chip solid state disk capable of being destroyed by explosion according to claim 1, comprising: the miniature silicon-based detonator is a miniature silicon-based blasting device based on the technology and the process of a micro-electromechanical system, and comprises a transduction element and a charging structure.