CN209994621U - Secret circuit for preventing FPC board circuit layout from being plagiarized - Google Patents
Secret circuit for preventing FPC board circuit layout from being plagiarized Download PDFInfo
- Publication number
- CN209994621U CN209994621U CN201920464112.0U CN201920464112U CN209994621U CN 209994621 U CN209994621 U CN 209994621U CN 201920464112 U CN201920464112 U CN 201920464112U CN 209994621 U CN209994621 U CN 209994621U
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- China
- Prior art keywords
- circuit
- silver chloride
- board
- covering film
- signal shielding
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- Expired - Fee Related
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Abstract
The utility model discloses a prevent secret circuit that FPC board circuit layout was copied belongs to circuit board technical field, including the PI soft board substrate, it has silver chloride to fill around the PI soft board substrate, the upper strata of silver chloride is last tectorial membrane, the upper strata of going up the tectorial membrane is last signal shielding mould, the lower floor of silver chloride covers the membrane for covering down, the lower floor that covers the membrane is signal shielding mould down. The utility model discloses a signal sensing layer of silver chloride, and the laminated structure covers behind opaque cover membrane pressfitting and the signal shielding mould through flexible printed circuit board's steel mesh printing processing technology, can effectual customization various signal feedback and control circuit, this kind of mode is unpacked apart the cover membrane of protection and can the comminuted destroy reach and can't duplicate this design and have the security to circuit layout, the present circuit board compares, neotype prevent that FPC board circuit layout from being copied and attacked the secret circuit and can effectively prevent that the circuit from being copied and attacked, the circuit security has been improved.
Description
Technical Field
The utility model belongs to the technical field of the circuit board, specifically be a prevent that FPC board circuit layout from being plagiarized secret circuit.
Background
Circuit boards are printed circuits made of flexible, dielectric substrates, which have many advantages not found in rigid printed circuit boards. For example, the device can be freely bent, wound and folded, can be randomly arranged according to the space layout requirement, and can be randomly moved and stretched in a three-dimensional space, so that the integration of component assembly and wire connection is realized. The FPC board is commonly used for connecting parts of electronic products, the volume of the electronic products can be greatly reduced by utilizing the FPC board, and the requirements of the electronic products on the development of high density and miniaturization are met. Therefore, the FPC board is widely used in the fields of aerospace, military, mobile communication, laptop computers, computer peripherals, digital cameras, and the like.
Most of the surfaces of FPC boards in the market at present are not provided with any anti-plagiarism layers, so that circuits in the FPC boards are easy to obtain, and after the surfaces of the FPC boards in the prior art are damaged, internal circuits are extremely easy to obtain, and the confidentiality is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: in order to solve the problems that the circuit in the FPC is easy to obtain due to the fact that most surfaces of FPC boards in the market are not provided with any anti-plagiarism layers, and the inner circuit is easy to obtain after the surfaces of the FPC boards in the prior art are damaged, and the confidentiality is poor, a confidential circuit for preventing circuit layout of the FPC boards from being plagiarism is provided.
The utility model adopts the technical scheme as follows:
a secret circuit for preventing circuit layout of an FPC (flexible printed circuit) from being plagiarized comprises a PI (polyimide) soft board substrate, silver chloride is filled around the PI soft board substrate, the upper layer of the silver chloride is an upper covering film, the upper layer of the upper covering film is an upper signal shielding die, the lower layer of the silver chloride is a lower covering film, and the lower layer of the lower covering film is a lower signal shielding die.
Holes are drilled in the upper surface and the lower surface of the PI soft board substrate, and silver chloride is filled in the upper surface and the lower surface of the PI soft board substrate and the holes.
And a polyimide insulating layer is arranged between the silver chloride and the upper covering film.
And a polyimide insulating layer is arranged between the silver chloride and the lower covering film.
Characters and marks are printed on the surfaces of the upper signal shielding die and the lower signal shielding die.
Wherein, the upper covering film and the lower covering film are both made of opaque black materials.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that: the utility model discloses a signal sensing layer of silver chloride, and the laminated structure covers behind opaque cover membrane pressfitting and the signal shielding mould through flexible printed circuit board's steel mesh printing processing technology, can effectual customization various signal feedback and control circuit, this kind of mode is unpacked apart the cover membrane of protection and can the comminuted destroy reach and can't duplicate this design and have the security to circuit layout, the present circuit board compares, neotype prevent that FPC board circuit layout from being copied and attacked the secret circuit and can effectively prevent that the circuit from being copied and attacked, the circuit security has been improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
the labels in the figure are: 1. a signal shielding module is arranged; 2. covering a film; 3. silver chloride; 4. PI soft board base material; 5. A lower cover film; 6. lower signal mask mode.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, a confidential circuit for preventing the circuit layout of the FPC board from being copied, comprising a PI flexible board substrate 4, silver chloride 3 filled around the PI flexible board substrate 4, an upper cover film 2 on the upper layer of the silver chloride 3, an upper signal shielding film 1 on the upper cover film 2, a lower cover film 5 on the lower layer of the silver chloride 3, and a lower signal shielding film 6 on the lower layer of the lower cover film 5, the present invention adopts a signal sensing layer of the silver chloride 3, and after the laminated structure covers the upper opaque cover film 2 and the lower cover film 5 through the steel mesh printing process of the flexible printed circuit board to press-fit with the upper signal shielding film 1 and the lower signal shielding film 6, various signal feedback and control circuits can be effectively customized, in this way, when the protective cover film is broken by the actual circuit, the design can not be copied, and the circuit layout has confidentiality when compared with the existing circuit board, the novel secret circuit for preventing the circuit layout of the FPC board from being plagiarized can effectively prevent the circuit from being plagiarized, and improves the circuit confidentiality.
Further, holes are drilled in the upper surface and the lower surface of the PI soft board substrate 4, silver chloride 3 is filled in the upper surface and the lower surface of the PI soft board substrate 4 and the holes, as shown in fig. 1, the silver chloride 3 is filled in the upper surface and the lower surface of the PI soft board substrate 4 and the holes, and therefore various circuits can be conveniently customized, and the application range is wide.
Further, a polyimide insulating layer is arranged between the silver chloride 3 and the upper covering film 2, as shown in fig. 1, the polyimide insulating layer is arranged between the silver chloride 3 and the upper covering film 2, so that short circuit of a circuit is prevented, and the use is safer.
Further, a polyimide insulating layer is arranged between the silver chloride 3 and the lower covering film 5, as shown in fig. 1, the polyimide insulating layer is arranged between the silver chloride 3 and the lower covering film 5, so that a short circuit of a circuit is prevented, and the use is safer.
Furthermore, characters and marks are printed on the surfaces of the upper signal shielding die 1 and the lower signal shielding die 6, and the characters and the marks are convenient for distinguishing the circuit boards and prevent confusion.
Furthermore, the upper covering film 2 and the lower covering film 5 are both made of opaque black materials, and the upper covering film 2 and the lower covering film 5 cover the upper surface and the lower surface of the circuit, so that the internal circuit is prevented from being seen by naked eyes, and the confidentiality is improved.
The working principle is as follows: the utility model discloses a silver chloride 3's signal sensing layer, and the steel mesh printing processing technology of stromatolite structure through flexible printed circuit board covers opaque covering film 2 and covers 5 pressfittings of membrane and last signal shielding mould 1 and signal shielding mould 6 backs down, can the various signal feedback of effectual customization and control circuit, this kind of mode is unpacked apart the real circuit when the covering film of protection and can crushing destruction reach and can't duplicate this design and have the security to circuit layout, the circuit board that compares current, neotype prevent that FPC board circuit layout from being copied and copied the secret circuit and can effectively prevent that the circuit from being copied, circuit security has been improved.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A secret line for preventing FPC board circuit layout from being plagiarized comprises a PI (polyimide) soft board substrate (4), and is characterized in that: the PI flexible printed circuit board is characterized in that silver chloride (3) is filled around the PI flexible printed circuit board substrate (4), the upper layer of the silver chloride (3) is an upper covering film (2), the upper layer of the upper covering film (2) is an upper signal shielding film (1), the lower layer of the silver chloride (3) is a lower covering film (5), and the lower layer of the lower covering film (5) is a lower signal shielding film (6).
2. A privacy circuit for preventing plagiarism of a circuit layout of an FPC board as recited in claim 1, wherein: holes are drilled in the upper surface and the lower surface of the PI soft board substrate (4), and silver chloride (3) is filled in the upper surface and the lower surface of the PI soft board substrate (4) and the holes.
3. A privacy circuit for preventing plagiarism of a circuit layout of an FPC board as recited in claim 1, wherein: and a polyimide insulating layer is arranged between the silver chloride (3) and the upper covering film (2).
4. A privacy circuit for preventing plagiarism of a circuit layout of an FPC board as recited in claim 1, wherein: and a polyimide insulating layer is arranged between the silver chloride (3) and the lower covering film (5).
5. A privacy circuit for preventing plagiarism of a circuit layout of an FPC board as recited in claim 1, wherein: characters and marks are printed on the surfaces of the upper signal shielding die (1) and the lower signal shielding die (6).
6. A privacy circuit for preventing plagiarism of a circuit layout of an FPC board as recited in claim 1, wherein: the upper covering film (2) and the lower covering film (5) are both made of opaque black materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920464112.0U CN209994621U (en) | 2019-04-08 | 2019-04-08 | Secret circuit for preventing FPC board circuit layout from being plagiarized |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920464112.0U CN209994621U (en) | 2019-04-08 | 2019-04-08 | Secret circuit for preventing FPC board circuit layout from being plagiarized |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209994621U true CN209994621U (en) | 2020-01-24 |
Family
ID=69291098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920464112.0U Expired - Fee Related CN209994621U (en) | 2019-04-08 | 2019-04-08 | Secret circuit for preventing FPC board circuit layout from being plagiarized |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209994621U (en) |
-
2019
- 2019-04-08 CN CN201920464112.0U patent/CN209994621U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200124 |
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| CF01 | Termination of patent right due to non-payment of annual fee |