CN212365496U

CN212365496U - Optical disk

Info

Publication number: CN212365496U
Application number: CN202021389084.XU
Authority: CN
Inventors: 陈南; 王慧慧
Original assignee: Weiyuan Material Technology Liaoning Co ltd
Current assignee: Anji Yuangeng Technology Co ltd
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2021-01-15
Anticipated expiration: 2030-07-15

Abstract

The embodiment of the utility model discloses an optical disk, include: a substrate, an electrothermal film, an electrode and a recording layer; the electrodes are covered on the electrothermal film, and the electrothermal film and the electrodes are located between the substrate and the recording layer. The embodiment of the utility model provides a CD can realize destroying the quick of CD data through the mode of inserting the power when needing, and the unable recovery of data after destroying, has both guaranteed data security, need not special data destruction instrument moreover, has very high flexibility.

Description

Optical disk

Technical Field

The embodiment of the utility model provides a relate to data storage technical field, concretely relates to CD.

Background

With the wide popularization of mobile terminal devices such as computers and mobile phones, information storage methods have been qualitatively changed. The prior thick book data is replaced by various storage devices such as hard disks, optical disks, flash disks and the like, thereby bringing great convenience to work and life. But the data security problem is more and more prominent, millions of hard disks need to be eliminated for various reasons every year in China, and nearly hundred million optical disks, flash disks and various memory cards need to be destroyed. The destruction scale is so huge that if the effective management means and the destruction technology are not matched, extremely serious divulgence results are caused.

In recent years, data leakage events occur continuously due to the fact that hard disks storing important information are not destroyed in time or are not thoroughly destroyed. For example, uk telecommunications has collected 350 hard disks from different channels that were discarded or distributed to the second-hand market, where 37% of the hard disks are able to recover personal or business information using data recovery software. At present, the commonly used hard disks have storage capacities of hundreds of G or T, can store a large amount of information, and particularly, data in waste media of state organs, military troops and scientific research units are confidential or secret-insulated, so that once the information data is lost or leaked, the consequences are unreasonable. Professional data destruction on damaged and abandoned storage media is a key link for preventing information leakage and is an important means for ensuring information safety.

At present, the data destruction technology mainly comprises two destruction modes of reusable media and non-reusable media. The former is mostly disk formatting or data overwriting, and data can be restored by professional data restoring equipment. The latter is often a failure of the media storage device to recover data by an external force. The destruction of data in an optical disc is a physical pulverization method, which means that a storage means of a medium is damaged by an external force, and the data cannot be restored. The granularity of the crushed residue is required to meet the destruction standard regulated in national BMB 21-2007: the length is less than or equal to 3mm, and the area is less than or equal to 9mm²The recess is 0.2mm above the upper surface, breaking concentricity to a deviation of 10%. Therefore, a professional crusher and a fixed place are required, so that the flexibility of data destruction work is greatly limited.

SUMMERY OF THE UTILITY MODEL

To solve the problems in the prior art, an embodiment of the present invention provides an optical disc.

An embodiment of the present invention provides an optical disc, including: a substrate 1, an electrothermal film 2, an electrode 3 and a recording layer; wherein the content of the first and second substances,

the electrode 3 covers the electrothermal film 2, and the electrothermal film 2 and the electrode 3 are positioned between the substrate 1 and the recording layer.

Optionally, the electrothermal film 2 is a graphene film.

Optionally, the number of layers of the graphene film is between 1 and 10.

Optionally, the number of layers of the graphene film is 2-5.

Alternatively, the electrodes 3 are in the form of concentric rings.

Optionally, the electrode 3 comprises a power contact 4.

Optionally, the method further includes: an insulating layer;

the insulating layer is located between the electric heating film 2 and the recording layer.

Optionally, the method further includes: a power supply connector;

the power supply connector is connected with the electrode 3.

The embodiment of the utility model provides a CD can realize destroying the quick of CD data through the mode of inserting the power when needing, and the unable recovery of data after destroying, has both guaranteed data security, need not special data destruction instrument moreover, has very high flexibility.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of an optical disc provided by an embodiment of the present invention;

fig. 2 is a schematic diagram of a structure of an electrode in an optical disc according to an embodiment of the present invention;

fig. 3 is a schematic diagram of another structure of an electrode in an optical disc according to an embodiment of the present invention;

fig. 4 is a schematic diagram of another structure of an electrode in an optical disc according to an embodiment of the present invention.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Optical discs are data storage media that use optical information as a carrier for storage and for storing data. Optical disks can be generally classified into two types, one being read-only type optical disks including CD-Audio, CD-Video, CD-ROM, DVD-Audio, DVD-Video, DVD-ROM, etc.; another type is recordable type optical disc, including CD-R, CD-RW, DVD-R, DVD + R, DVD + RW, DVD-RAM, Double layer DVD + R, and the like.

Although there may be some differences in the structure of different types of optical discs, the main structural principles are consistent. Taking a CD disc as an example, the structure of the CD disc is mainly divided into five layers, including a substrate, a recording layer, a reflective layer, a protective layer, a printing layer, and the like. Wherein, the substrate is the physical shell of the whole optical disc and is also the carrier of other functional layers in the optical disc; the recording layer is used for recording information, and the working principle of the recording layer is that special materials (such as organic dye or carbon substance) are coated on the substrate for laser recording information; the reflecting layer is used for reflecting the area of the laser beam of the optical drive; the protective layer is used for protecting the reflecting layer and the recording layer in the optical disc so as to prevent signals from being damaged; the printing layer is used for printing identification information of the optical disc, such as the name and content introduction of the optical disc.

The embodiment of the utility model provides an optical disc improves on the basis of current optical disc, can realize rapidly when needs destroying the data of storage in the optical disc.

Fig. 1 is a schematic diagram of an optical disc provided by an embodiment of the present invention, as shown in fig. 1, an embodiment of the present invention provides an optical disc including: a substrate 1, an electrothermal film 2, electrodes 3 and a recording layer (not shown in fig. 1). The electrode 3 covers the electrothermal film 2, and the electrothermal film 2 and the electrode 3 are positioned between the substrate 1 and the recording layer.

The following further describes each part of the optical disc.

The substrate 1 is not substantially different from the substrate of the optical disc in the prior art in terms of the selected material, size, thickness, etc., and therefore is not described in the embodiment of the present invention.

The electrothermal film 2 is used for generating heat under the drive of electric energy, thereby causing damage to the adjacent recording layer.

The electrothermal film 2 has multiple implementation modes, in an embodiment of the present invention, the electrothermal film 2 is a graphene film.

Graphene has an atomically constrained lattice structure such that it can withstand higher current densities, which in turn generates higher heating temperatures.

In the embodiment of the present invention, the number of layers of the graphene film is 1-10, and the corresponding thickness is 0.23-2.3 nm. Preferably 2-5 layers, and the corresponding thickness is between 0.46 and 1.15 nanometers.

The graphene film can be prepared by a preparation method in the prior art, such as a chemical vapor deposition method. The prepared graphene film is peeled off by a thermal release tape transfer method and transferred onto the substrate 1.

In another embodiment of the present invention, the electric heating film 2 may also be an oxide semiconductor transparent conductive film, such as ITO (Indium Tin oxide).

The electrode 3 is used for conducting current.

In the embodiment of the present invention, the electrode 3 is printed on the surface of the electric heating film 2 by using the screen printing process or the nanoimprint process. The electrode 3 can be realized by adopting conductive paste, such as nano silver particles, nano copper particles and the like.

The electrode 3 may have a variety of configurations, and fig. 2 is a schematic diagram of one configuration of the electrode 3. As shown in fig. 2, the electrodes 3 are two concentric rings. Fig. 3 is a schematic view of another structure of the electrode 3. As shown in fig. 3, the electrode 3 is a plurality of concentric rings, and the rings near the center of the circle are arranged in a higher density. Fig. 4 is a schematic view of still another structure of the electrode 3. As shown in fig. 4, the electrodes 3 are a plurality of concentric rings such as mosquito coils. The electrode 3 is annular and can be adapted to the shape of the optical disc. The electrode 3 includes a plurality of concentric rings for these rings can distribute on the electric heat membrane 2 comparatively balancedly, make the electric heat membrane 2 can generate heat comparatively uniformly, thereby all cause destruction everywhere to the record level in the CD.

The two ends of the electrode 3 are provided with power supply contact points 4, and the power supply contact points 4 are connected with an external power supply.

As a general knowledge of those skilled in the art, the optical disc provided in the embodiments of the present invention may further include other functional layers such as a reflective layer, a protective layer, and a printing layer, and the structure and position of these functional layers in the optical disc are not substantially different from those in the prior art, and therefore, the description thereof will not be repeated here.

The embodiment of the utility model provides a CD can normally read and write data wherein at the during operation. When the optical disc needs to be destroyed, the power supply can be accessed through the power supply contact point 4 on the optical disc. The optical disc is applied with low voltage (such as 1-24V DC/AC), the temperature of the electrothermal film 2 in the optical disc is instantly raised, and the temperature of the electrothermal film in the form of graphene can be instantly raised to 200-500 ℃. Since the material used to prepare the recording layer may melt or decompose at high temperatures, the data stored in the recording layer is also permanently destroyed and cannot be recovered by the data recovery methods of the prior art.

Based on any one of the above embodiments, in the embodiment of the present invention, the optical disc further includes:

an insulating layer; the insulating layer is located between the electric heating film 2 and the recording layer.

In order to prevent the electric current generated when the optical disc normally operates from being conducted to the electrode 3, and further, the electric heating film 2 is heated, thereby causing damage to data in the optical disc. In the embodiment of the present invention, an insulating layer is covered on the side of the electric heating film 2 facing the recording layer to block the current.

The insulating layer can be made of an insulating material, such as a PVB film.

The embodiment of the utility model provides an optical disc is through setting up the insulating layer between the electrical heating membrane of optical disc and record level for the electric current that the optical disc generated at normal during operation can not conducted on the electrode, and then heats the electrical heating membrane, has avoided the destruction to optical disc data at the normal during operation of optical disc.

Based on any one of the above embodiments, in the embodiment of the present invention, the optical disc further includes: and a power supply connector.

The power supply connection can be connected to a power supply contact 4 on the electrode 3, by means of which the power supply contact 4 can be connected to a power supply.

The embodiment of the utility model provides a CD inserts low voltage power supply (if 1 ~ 24V direct current/exchange) can realize the rapid heating of electrical heating membrane, if insert high voltage power supply can cause the threat to human safety on the contrary. The power supply connector can realize voltage conversion. Such as converting 220V ac voltage to 12V ac voltage.

The embodiment of the utility model provides a CD passes through power connection and realizes voltage conversion, security when having guaranteed the CD and destroyed.

It should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. An optical disc, comprising: the device comprises a substrate (1), an electrothermal film (2), an electrode (3) and a recording layer; wherein the content of the first and second substances,

the electrode (3) covers the electrothermal film (2), and the electrothermal film (2) and the electrode (3) are positioned between the substrate (1) and the recording layer.

2. Optical disc according to claim 1, characterized in that the electrothermal film (2) is a graphene film.

3. The optical disc according to claim 2, wherein the number of graphene thin films is between 1 and 10.

4. The optical disc according to claim 3, wherein the number of graphene thin films is between 2 and 5.

5. Optical disc according to claim 1, characterized in that the electrodes (3) are concentrically circular.

6. Optical disc according to claim 1, characterized in that the electrode (3) comprises a power supply contact point (4).

7. The optical disc according to any one of claims 1 to 6, further comprising: an insulating layer;

the insulating layer is located between the electrothermal film (2) and the recording layer.

8. The optical disc according to any one of claims 1 to 6, further comprising: a power supply connector;

the power supply connector is connected with the electrode (3).

9. The optical disc of claim 7, further comprising: a power supply connector;

the power supply connector is connected with the electrode (3).