CN218388089U - Data protection structure and electronic equipment - Google Patents
Data protection structure and electronic equipment Download PDFInfo
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- CN218388089U CN218388089U CN202222505981.8U CN202222505981U CN218388089U CN 218388089 U CN218388089 U CN 218388089U CN 202222505981 U CN202222505981 U CN 202222505981U CN 218388089 U CN218388089 U CN 218388089U
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Abstract
The utility model is suitable for an electronic equipment technical field, a data protection structure and electronic equipment are provided, the data protection structure includes first printed circuit board, be provided with at least one flexible circuit board on the first printed circuit board, the flexible circuit board is provided with sensitive data transmission district, one side that the flexible circuit board deviates from first printed circuit board is provided with the second printed circuit board, the flexible circuit board passes through the connector and is connected with first printed circuit board electricity, the connector is located between first printed circuit board and the second printed circuit board, the second printed circuit board is connected with the flexible circuit board electricity, the second printed circuit board is provided with the protection and walks the line, the protection is walked the line and is connected with first printed circuit board electricity. The application provides a data protection architecture sets up the second printed circuit board that has the protection line through the one side that deviates from first printed circuit board at flexible circuit board, can construct a safe district to sensitive data and connector on the protection flexible circuit board, the assembly is simple, easy to operate.
Description
Technical Field
The present application relates to the field of electronic devices, and more particularly, to a data protection structure and an electronic device.
Background
At present, some electronic devices, especially financial terminals, store some highly sensitive data information, called as sensitive data, such as passwords, private keys, and the like, in order to prevent the sensitive data of the electronic devices from being detected, a security zone is built inside the electronic devices through a structure, and important components and signal lines are arranged in the security zone.
However, due to the limitation of the product shape, structural design or assembly manner of the electronic device, some structures and connection terminals having sensitive data are placed in the insecure area, and if the secure area is to be reconstructed from the flat cable and connection terminals having sensitive data, the cost is greatly increased and not only is the structural limitation of the electronic device imposed, but also the structures and connection terminals having sensitive data in the insecure area are difficult to protect, so that the risk of data leakage of the electronic device is relatively high.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the present application is to provide a data protection structure and an electronic device, which aim to solve the technical problem that the data leakage risk of the structure with sensitive data and the connection end in the insecure area is relatively high in the prior art.
In order to achieve the purpose, the technical scheme adopted by the application is as follows: there is provided a data protection architecture comprising: the flexible printed circuit board comprises a first printed circuit board, wherein at least one flexible circuit board is arranged on the first printed circuit board, the flexible circuit board is provided with a sensitive data transmission area, one side of the flexible circuit board, which deviates from the first printed circuit board, is provided with a second printed circuit board, the flexible circuit board is electrically connected with the first printed circuit board through a connector, the connector is positioned between the first printed circuit board and the second printed circuit board, the second printed circuit board is electrically connected with the flexible circuit board, the second printed circuit board is provided with a protection wiring, and the protection wiring is electrically connected with the first printed circuit board.
In a possible design, the flexible circuit board includes a first layer, a second layer and a third layer, the second layer is located between the first layer and the third layer, the second layer is provided with the sensitive data transmission area, the first layer and the third layer are respectively provided with a protection wiring, the protection wiring of the first layer is electrically connected with the protection wiring of the third layer, the protection wiring of the first layer and the protection wiring of the third layer cover the sensitive data transmission area from two sides respectively, the protection wiring of the first layer is electrically connected with the first printed circuit board through the connector, and the protection wiring of the third layer is electrically connected with the protection wiring of the second printed circuit board.
In one possible design, the flexible printed circuit board is provided with a wire hole, the wire hole is located between the second printed circuit board and the first printed circuit board, the protection wire of the first layer passes through the wire hole to enter the third layer, and the protection wire of the third layer is formed by winding the third layer.
In one possible design, a signal pad is disposed between the flexible circuit board and the second printed circuit board, and the guard trace of the third layer is electrically connected to the guard trace on the second printed circuit board via the signal pad.
In one possible design, a protection pad is arranged between the flexible circuit board and the second printed circuit board, the protection pad is arranged around the signal pad, and the protection pad and the signal pad have signals with mutually exclusive levels.
In one possible design, the number of the signal pads is multiple, and the guard pad is arranged around the peripheral area of the signal pads.
In one possible embodiment, the first printed circuit board is provided with a blocking structure, the blocking structure is located in a peripheral region of the connector, and the blocking structure is located between the second printed circuit board and the first printed circuit board.
In a possible design, a distance between the first printed circuit board and the second printed circuit board is a, a distance between an edge of the second printed circuit board on the same side as the blocking structure and the connector is b, a distance between the blocking structure and the first printed circuit board is c, and a distance between the blocking structure and the connector is d, then:
b＞(a*d)/c。
in a possible design, the connector includes a first connection terminal and a second connection terminal, the first connection terminal is disposed on the first printed circuit board, the second connection terminal is disposed on the flexible circuit board, and the first connection terminal is electrically connected to the second connection terminal.
The present application further provides an electronic device, including the data protection structure according to any of the above technical solutions.
The application provides a data protection architecture's beneficial effect lies in: compared with the prior art, in the data protection structure of this application, the flexible circuit board passes through the connector and is connected with first printed circuit board electricity to make sensitive data can pass through the connector from first printed circuit board and convey the sensitive data transmission district on the flexible circuit board. The side of the flexible printed circuit board facing away from the first printed circuit board is provided with a second printed circuit board, i.e. the flexible printed circuit board is arranged between the first printed circuit board and the second printed circuit board, so that the second printed circuit board covers at least part of the area of the flexible printed circuit board. The second printed circuit board is provided with a protection wire which is electrically connected with the first printed circuit board so as to form a safety area between the second printed circuit board and the first printed circuit board, and the flexible circuit board is positioned between the first printed circuit board and the second printed circuit board, namely at least part of the structure of the flexible circuit board is positioned in the safety area, thereby enhancing the protection of sensitive data on the flexible circuit board. The protection of the connector is enhanced by the fact that the connector is located between the first printed circuit board and the second printed circuit board, i.e. the connector is also located in the safety zone. By last knowing, the data protection architecture that this application provided only need set up the second printed circuit board that has the protection line of walking in the one side that flexible circuit board deviates from first printed circuit board, can construct a safe district to the sensitive data and the connector that the protection lies in on the flexible circuit board in safe district, this data protection architecture assembly is simple, easy to operate.
The application provides an electronic equipment's beneficial effect lies in: the electronic device provided by the application comprises the data protection structure provided by the application, so that the electronic device provided by the application at least has the beneficial effects of the data protection structure, and the description is omitted here.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a first schematic structural diagram of a data protection architecture according to an embodiment of the present application;
fig. 2 is a schematic structural diagram ii of a data protection structure according to an embodiment of the present application;
FIG. 3 is a partial schematic structural diagram of a data protection architecture provided by an embodiment of the present application;
fig. 4 is a partially enlarged schematic view at a in fig. 1.
Reference numerals referred to in the above figures are detailed below:
10. a first printed circuit board; 20. a second printed circuit board; 30. a flexible circuit board; 40. a connector; 41. a first connection end; 42. a second connection end; 50. a signal pad; 51. a first bonding pad; 52. a second bonding pad; 53. a third bonding pad; 54. a fourth pad; 60. a protection pad; 61. a fifth pad; 62. a number six pad; 63. a seventh pad; 64. a eighth pad; 70. a blocking structure.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application 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 merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify the description, and do not indicate or imply that the referenced data protection structure or element must have a particular orientation, be constructed in a particular orientation, and be constructed in a particular manner of operation, and is not to be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In order to explain the technical solutions of the present application, the following detailed descriptions are made with reference to specific drawings and examples.
As shown in fig. 1, one embodiment of the present application provides a data protection architecture, comprising: the printed circuit board assembly comprises a first printed circuit board 10, a flexible circuit board 30, a second printed circuit board 20 and a connector 40, wherein the first printed circuit board 10, the flexible circuit board 30 and the second printed circuit board 20 are arranged in a stacked mode. The flexible printed circuit board comprises a first printed circuit board 10, at least one flexible circuit board 30 is arranged on the first printed circuit board 10, a sensitive data transmission area is arranged on the flexible circuit board 30, a second printed circuit board 20 is arranged on one side, away from the first printed circuit board 10, of the flexible circuit board 30, the flexible circuit board 30 is electrically connected with the first printed circuit board 10 through a connector 40, the connector 40 is located between the first printed circuit board 10 and the second printed circuit board 20, the second printed circuit board 20 is electrically connected with the flexible circuit board 30, the second printed circuit board 20 is provided with a protection wire, the protection wire is electrically connected with the first printed circuit board 10, and a mesh winding is arranged on the second printed circuit board 20.
In this embodiment, the Printed Circuit Board is a PCB, printed Circuit Board.
The Flexible Circuit board 30 is an FPC, a Flexible Printed Circuit.
The sensitive data includes passwords, account data, prompting messages, encrypted passwords, keys to account numbers or other sensitive data related to financial services, and the like.
The protection wire is a pointer signal wire, and particularly a signal wire capable of detecting a level change, for example, when a security processor (e.g., a security CPU) detects that a level on the protection wire is inconsistent with a set level value, the security processor triggers a security mechanism to erase sensitive data.
The Mesh winding refers to the winding formed by winding the protection wire independently or winding a plurality of protection wires mutually.
The data protection structure provided in this embodiment is applied to an electronic device, for example, the data protection structure provided in this embodiment may be applied to financial terminals such as a Point of sale (POS) machine (POS), the first printed circuit board 10 may be a motherboard of the electronic device, or may be another circuit board in the electronic device, and the first printed circuit board 10 may detect a level on a protection trace.
The flexible circuit board 30 may be applied to a touch screen, a liquid crystal display, a key of an electronic device, and the like.
In this embodiment, one flexible circuit board 30 may be disposed on one first printed circuit board 10, or a plurality of flexible circuit boards 30 may be disposed on the first printed circuit board 10, each flexible circuit board 30 is provided with one connector 40 and a second printed circuit board 20, each flexible circuit board 30 is electrically connected to the first printed circuit board 10 through the corresponding connector 40, one side of each flexible circuit board 30 away from the first printed circuit board 10 is respectively provided with at least one second printed circuit board 20, and the protection traces on each second printed circuit board 20 are electrically connected to the first printed circuit board 10. When the number of the flexible circuit boards 30 is plural, the number of the second printed circuit boards 20 is the same as the number of the flexible circuit boards 30, a safety zone is formed between each second printed circuit board 20 and the first printed circuit board 10, one connector 40 is arranged between the first printed circuit board 10 and each flexible circuit board 30, and each connector 40 is located in the corresponding safety zone.
For convenience of description, the first printed circuit board 10 is provided with one flexible circuit board 30, and the second printed circuit board 20 is provided with one flexible circuit board 30.
In the data protection structure provided by this embodiment, the flexible circuit board 30 is disposed on the first printed circuit board 10, the flexible circuit board 30 is electrically connected to the first printed circuit board 10 through the connector 40, and a side of the flexible circuit board 30 away from the first printed circuit board 10 is disposed with the second printed circuit board 20, that is, at least a part of the structure of the flexible circuit board 30 is disposed between the first printed circuit board 10 and the second printed circuit board 20, so that the second printed circuit board 20 covers at least a part of the structure of the flexible circuit board 30. By providing the guard traces on the second printed circuit board 20, a safety zone is formed between the second printed circuit board 20 and the first printed circuit board 10, and the flexible circuit board 30 is located between the first printed circuit board 10 and the second printed circuit board 20, that is, at least a part of the flexible circuit board 30 is located in the safety zone, so as to enhance the protection of the sensitive data in the sensitive data transmission zone on the flexible circuit board 30. Since the connector 40 is located between the first printed circuit board 10 and the second printed circuit board 20, that is, the connector 40 is also located in the security zone, the protection of the connection end of the connector 40 is enhanced to some extent.
As can be seen from the above, the data protection structure provided in this embodiment can construct a safety zone by disposing the second printed circuit board 20 having the protection traces on the side of the flexible circuit board 30 away from the first printed circuit board 10, so as to protect the sensitive data and the connector 40 in the sensitive data transmission zone on the flexible circuit board 30.
For convenience of description, the first printed circuit board 10 is horizontally disposed and the flexible circuit board 30 is located above the first printed circuit board 10.
To improve the protection effect for the sensitive data, in an alternative embodiment, the flexible circuit board 30 has a multi-layer structure, and the sensitive data is disposed on a middle layer of the flexible circuit board 30, that is, at least one layer is disposed above and below the layer on which the sensitive data is disposed. For example, in one possible design, the flexible circuit board 30 includes a first layer, a second layer and a third layer, the second layer being located between the first layer and the third layer, the second layer being provided with a sensitive data transfer area having sensitive data. The first layer and the third layer are respectively provided with a protective wire, and the protective wire of the first layer and the protective wire of the third layer respectively cover the sensitive data transmission area from two sides. In the setting mode, the first layer and the third layer are respectively arranged on two sides of the second layer with the sensitive data, the protection wires are arranged on the first layer and the third layer, and the protection wires on the first layer and the third layer protect the sensitive data from two sides respectively, so that the protection effect of the sensitive data is further improved. It is worth mentioning that the flexible circuit board 30 may also comprise more layers, for example, other layers besides the first layer on one side of the second layer, or other layers besides the third layer on the other side of the second layer.
In one possible design, the guard traces of the first layer, the third layer and the second printed circuit board 20 may be independent traces, or the guard traces of the first layer, the third layer and the second printed circuit board 20 may be electrically connected with each other. When the guard traces of the first layer, the third layer and the second printed circuit board 20 are independent traces, the guard traces of the first layer, the third layer and the second printed circuit board 20 are respectively independently routed and respectively independently powered on. When the first layer, the third layer and the guard traces of the second printed circuit board 20 are electrically connected, in an optional embodiment, the first layer is located below the second layer, the guard traces of the first layer are electrically connected to the first printed circuit board 10, the third layer is located above the second layer, and the guard traces of the third layer are electrically connected to the guard traces of the second printed circuit board 20. Since the guard trace of the first layer is electrically connected to the guard trace of the third layer, the guard trace of the second printed circuit board 20 is electrically connected to the first printed circuit board 10 via the guard trace of the third layer and the guard trace of the first layer.
In an optional implementation manner, the guard trace of the first layer and the guard trace of the third layer are separately disposed, and an end of the guard trace of the first layer is electrically connected to the guard trace of the third layer.
Or, in another optional embodiment, the protection trace of the first layer and the protection trace of the third layer are the same group of protection traces, that is, the protection trace of the first layer is wound to the third layer to form the protection trace of the third layer. In one possible design, the flexible circuit board 30 is provided with a routing hole, the routing hole is located between the second printed circuit board 20 and the first printed circuit board 10, the protection wire of the first layer passes through the routing hole to enter the third layer, and the protection wire of the third layer is wound on the third layer. By providing the wiring hole, the guard trace of the first layer can pass through the second layer into the third layer, and since the wiring hole is located between the second printed circuit board 20 and the first printed circuit board 10, the second printed circuit board 20 can cover the wiring hole, i.e. the wiring hole is located in the safety zone.
In one possible design, as shown in fig. 2 and 3, a signal pad 50 is disposed between the flexible circuit board 30 and the second printed circuit board 20, and the guard trace of the third layer is electrically connected to the guard trace on the second printed circuit board 20 via the signal pad 50. By providing the signal pads 50, not only the electrical connection between the third layer of guard traces and the guard traces on the second printed circuit board 20 can be achieved, but also the connection stability between the flexible circuit board 30 and the second printed circuit board 20 can be improved, and the second printed circuit board 20 is prevented from moving relative to the flexible circuit board 30, so that the sensitive data transmission area is exposed.
In one embodiment, the number of the signal pads 50 may be two or more, and when the number of the signal pads 50 is two, the input end of the guard trace on the second printed circuit board 20 is electrically connected to the guard trace on the third layer through one of the signal pads 50, and the output end of the guard trace on the second printed circuit board 20 is electrically connected to the guard trace on the third layer through the other signal pad 50.
When the number of the signal pads 50 is more, as shown in fig. 3, the signal pads 50 are all located on the lower side of the second printed circuit board 20 (i.e. the side of the second printed circuit board 20 facing the flexible circuit board 30), the signal pads 50 are distributed in an array on the lower side of the second printed circuit board 20, and the signal pads 50 may be specifically distributed in a rectangular array, or may be distributed in an annular array, which is not limited herein. Alternatively, the number of the signal pads 50 is four, and for convenience of description, the four signal pads 50 are referred to as a pad No. one 51, a pad No. two 52, a pad No. three 53, and a pad No. four 54, respectively.
In one possible design, as shown in fig. 2, an anti-pad 60 is disposed between the flexible circuit board 30 and the second printed circuit board 20, the anti-pad 60 is disposed around the signal pad 50, and the anti-pad 60 and the signal pad 50 have mutually exclusive signals. When the anti-pad 60 is disturbed, for example, the second printed circuit board 20 is forcibly removed, or the anti-pad 60 is touched by an external detector, the anti-pad 60 contacts the signal pad 50, so that the level of the signal pad 50 is changed. The signal pad 50 is connected with a guard trace so that the level of the guard trace changes. The protection wires are all Tamper signal wires, and when the safety CPU detects that the level of the Tamper signal wires changes, the safety CPU immediately triggers a safety mechanism to erase sensitive data, so that the sensitive data are prevented from being leaked.
In one possible design, as shown in fig. 2 and 3, when the number of the signal pads 50 is plural, the guard pad 60 is provided around the peripheral area of the plural signal pads 50, and the plural signal pads 50 are simultaneously protected by the guard pad 60.
Fig. 3 is a distribution diagram of the signal pads 50 and the guard pads 60 on the second printed circuit board 20, where the number of the signal pads 50 is multiple, and the multiple signal pads 50 are distributed in an array. The number of the guard pads 60 is 4, which are a fifth pad 61, a sixth pad 62, a seventh pad 63 and an eighth pad 64, wherein, in the direction shown in fig. 3, the fifth pad 61 is located above the plurality of signal pads 50 in an array shape, the sixth pad 62 is located on the left side of the plurality of signal pads 50 in an array shape, the seventh pad 63 is located below the plurality of signal pads 50 in an array shape, and the eighth pad 64 is located on the right side of the plurality of signal pads 50 in an array shape, that is, the four guard pads 60 surround the peripheries of the plurality of signal pads 50 to protect the signal pads 50. In addition, the protection pad 60 also serves to enhance the connection strength between the second printed circuit board 20 and the flexible circuit board 30.
In one possible design, the connector 40 may be a unitary structure with one end connected to the second printed circuit board 20 and the other end connected to the flexible circuit board 30.
In another possible design, the connector 40 includes two mating structures, one mounted on the second printed circuit board 20 and the other mounted on the flexible circuit board 30, which mate to provide an electrical connection, in a manner that facilitates assembly. For example, the connector 40 includes a first connection terminal 41 and a second connection terminal 42, the first connection terminal 41 is disposed on the first printed circuit board 10, the second connection terminal 42 is disposed on the flexible circuit board 30, and the first connection terminal 41 is electrically connected to the second connection terminal 42. By providing the first connection terminal 41 and the second connection terminal 42, and electrically connecting the first connection terminal 41 and the second connection terminal 42, the first printed circuit board 10 and the second printed circuit board 20 can be electrically connected, so that the assembly of the data protection structure is simplified.
In one embodiment, the first connection terminal 41 has a socket, the second connection terminal 42 has a plug, and the plug of the second connection terminal 42 is inserted into the socket of the first connection terminal 41 to connect the first connection terminal 41 and the second connection terminal 42, so as to electrically connect the first printed circuit board 10 and the flexible circuit board 30. The first connection terminal 41 and the first printed circuit board 10 can be soldered, and the second connection terminal 42 and the flexible circuit board 30 can be soldered.
In a specific implementation manner of this embodiment, the protection trace includes a plurality of signal lines, the trace manner of the signal lines may be a single-line winding manner or a combined trace manner, the trace order of the plurality of signal lines is not limited, and the trace manner of the signal lines is further described below by taking the protection trace including the first signal line and the second signal line as an example. In the following example, the flexible circuit board 30 includes a first layer, a second layer, and a third layer, the first connection terminal 41 is connected to the first printed circuit board 10, the second connection terminal 42 is connected to the first layer of the flexible circuit board 30, and each signal pad 50 is connected to the third layer of the flexible circuit board 30.
The first signal line is connected to the first connection terminal 41 through the first printed circuit board 10, connected to the second connection terminal 42 through the first connection terminal 41, and connected to the first layer of the flexible circuit board 30 through the second connection terminal 42;
the second signal line is connected to the first connection terminal 41 through the first printed circuit board 10, connected to the second connection terminal 42 through the first connection terminal 41, and connected to the first layer of the flexible circuit board 30 through the second connection terminal 42;
the first signal line and the second signal line are subjected to Tamper winding together on the first layer of the flexible circuit board 30 to form a protection wire of the first layer, and the protection wire covers the sensitive data transmission area of the second layer, namely covers the sensitive data of the second layer;
after the first signal line and the second signal line finish the winding of the protection routing of the first layer, the first signal line and the second signal line enter the third layer through the routing holes, the routing holes are positioned in the covering area of the second printed circuit board 20 on the flexible circuit board 30, the first signal line and the second signal line perform Tamper winding on the third layer of the flexible circuit board 30 together to form the protection routing of the third layer, and the protection routing covers the sensitive data transmission area of the second layer, namely covers the sensitive data of the second layer;
the first signal line is connected to the second printed circuit board 20 through the first bonding pad 51 after completing the winding of the guard trace of the third layer, the second signal line is connected to the second printed circuit board 20 through the second bonding pad 52 after completing the winding of the guard trace of the third layer, and the first signal line and the second signal line are subjected to Tamper winding together on the second printed circuit board 20 to form the guard trace of the second printed circuit board 20;
the first signal line is connected to the flexible circuit board 30 through a third bonding pad 53 after completing the winding of the protection trace of the second printed circuit board 20, then is connected to the first connection terminal 41 through the second connection terminal 42, and is connected to the first connection terminal of the first printed circuit board 10 through the first connection terminal 41;
the second signal line is connected to the flexible circuit board 30 through the fourth pad 54 after completing the winding of the guard trace of the second printed circuit board 20, and then connected to the first connection terminal 41 through the second connection terminal 42, and connected to the second connection terminal of the first printed circuit board 10 through the first connection terminal 41.
In some alternative embodiments, the first signal line and the second signal line may be arranged to cross each other when the first layer, the third layer and the second printed circuit board 20 are wound, so that the first winding layer, the second winding layer and/or the third winding layer may present a grid-shaped coil. Alternatively, the first signal line and the second signal line may be arranged in parallel so that the first winding layer, the second winding layer, and/or the third winding layer exhibit a striped or planar spiral coil.
In an alternative embodiment, the protection wire may further include more signal lines, for example, a third signal line, a fourth signal line, and the like, and the routing manner of the other signal lines may be the same as the winding process of the first signal line and the second signal line. The first signal line and the second signal line may be used for transmitting different Tamper data, or may be used for transmitting the same Tamper data, which is not limited herein.
In one possible design, as shown in fig. 1 and 4, the first printed circuit board 10 is provided with a barrier structure 70, the barrier structure 70 being located in a peripheral region of the connector 40, and the barrier structure 70 being located between the second printed circuit board 20 and the first printed circuit board 10. The solder ends of the connector 40 are protected in the peripheral region of the connector 40 by the facility barrier structure 70 to prevent the solder ends of the connector 40 from being detected, thereby further protecting sensitive data from leakage. It should be noted that the barrier structure 70 is located between the second printed circuit board 20 and the first printed circuit board 10, which means that the barrier structure 70 is also located in the safety zone. The connector 40 has two solder terminals, one of which is the solder terminal of the connector 40 and the flexible circuit board 30 (at the junction of the connector 40 and the flexible circuit board 30) and the other of which is the solder terminal of the connector 40 and the first printed circuit board 10 (at the junction of the connector 40 and the first printed circuit board 10).
In one embodiment, the number of baffle structures 70 may be one or more. As shown in fig. 1 and 4, when there is one barrier structure 70, the barrier structure 70 may be located on only one side of the connector 40. Alternatively, the baffle structure 70 is a ring-shaped structure, and the ring-shaped baffle structure 70 is disposed around the peripheral region of the connector 40 to more completely prevent the solder terminal of the connector 40 from being detected. When the barrier structure 70 is plural, the plurality of barrier structures 70 are respectively located on different sides of the connector 40. For example, when there are two barrier structures 70, the two barrier structures 70 are respectively located at opposite sides of the connector 40, thereby protecting the soldering end of the connector 40.
In one possible design, the distance between the first printed circuit board 10 and the second printed circuit board 20 is a, the distance between the blocking structure 70 and the connector 40 in the second printed circuit board 20 on the same side is b (or the distance between the blocking structure 70 and the connecting end of the connector 40 on the same side is b), the maximum vertical distance between the blocking structure 70 and the first printed circuit board 10 is c (or the maximum height of the blocking structure 70 is c), and the minimum distance between the blocking structure 70 and the connector 40 is d, then: b > (a × d)/c. As shown in fig. 4, the dotted line in fig. 4 is an auxiliary line, and does not represent any specific structure of the data protection structure provided in the present embodiment. Taking the dotted line in fig. 4 as the detection path of the external object, when the external detection path can just detect the soldering terminal of the connector 40, it can be obtained by the principle of similar triangle: a/b = c/d, from which follows: b = (a × d)/c. As can be seen from the above, in order to prevent the soldering terminal of the connector 40 from being detected by the external object, the following relationships among a, b, c and d should be satisfied: b > (a x d)/c. As can be seen from b > (a × d)/c, the smaller the distance a is within a certain range, the higher the safety performance is, and the larger the distance b is within a certain range, the higher the safety performance is, that is, the larger the coverage area of the second printed circuit board 20 on the flexible circuit board 30 is, the higher the safety performance is.
An embodiment of the present application provides an electronic device including the data protection structure provided in any of the above embodiments. Because the electronic device provided by the embodiment includes the data protection structure, the electronic device provided by the embodiment also has the beneficial effects of good protection effect on sensitive data in an insecure area, simple assembly and easy operation.
In one embodiment, the electronic device includes a housing in which a data protection structure is mounted to protect the first printed circuit board 10, the second printed circuit board 20, the flexible circuit board 30, and the connector 40 from damage.
The electronic device provided by the embodiment can be a financial terminal, such as a POS machine. The first printed circuit board 10 may be a motherboard or other circuit board in an electronic device.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A data protection architecture, comprising: the flexible printed circuit board comprises a first printed circuit board, wherein at least one flexible circuit board is arranged on the first printed circuit board, the flexible circuit board is provided with a sensitive data transmission area, one side, deviating from the first printed circuit board, of the flexible circuit board is provided with a second printed circuit board, the flexible circuit board is electrically connected with the first printed circuit board through a connector, the connector is located between the first printed circuit board and the second printed circuit board, the second printed circuit board is electrically connected with the flexible circuit board, the second printed circuit board is provided with a protection wiring, and the protection wiring is electrically connected with the first printed circuit board.
2. The data protection structure according to claim 1, wherein the flexible circuit board includes a first layer, a second layer and a third layer, the second layer is located between the first layer and the third layer, the second layer is provided with the sensitive data transmission area, the first layer and the third layer are respectively provided with a protection trace, the protection trace of the first layer is electrically connected with the protection trace of the third layer, the protection trace of the first layer and the protection trace of the third layer respectively cover the sensitive data transmission area from two sides, the protection trace of the first layer is electrically connected with the first printed circuit board through the connector, and the protection trace of the third layer is electrically connected with the protection trace of the second printed circuit board.
3. The data protection architecture of claim 2, wherein said flexible circuit board is provided with a routing hole, said routing hole being located between said second printed circuit board and said first printed circuit board, said first layer of guard traces passing through said routing hole to enter said third layer and being routed at said third layer to form said third layer of guard traces.
4. The data protection structure of claim 3, wherein a signal pad is disposed between the flexible circuit board and the second printed circuit board, and the guard trace of the third layer is electrically connected to the guard trace on the second printed circuit board via the signal pad.
5. The data protection structure of claim 4, wherein a guard pad is disposed between the flexible circuit board and the second printed circuit board, the guard pad is disposed around the signal pad, and the guard pad and the signal pad have mutually exclusive signals in level.
6. The data protection structure of claim 5, wherein the number of the signal pads is plural, and the guard pad is surrounded at a peripheral area of the plural signal pads.
7. The data protection architecture of any of claims 1-6, wherein a barrier structure is disposed on the first printed circuit board, the barrier structure being located in a peripheral region of the connector, and the barrier structure being located between the second printed circuit board and the first printed circuit board.
8. The data protection architecture of claim 7, wherein a distance between said first printed circuit board and said second printed circuit board is a, a distance between an edge of said second printed circuit board on the same side as said spacer structure and said connector is b, a distance between said spacer structure and said first printed circuit board is c, and a distance between said spacer structure and said connector is d, then:
b＞(a*d)/c。
9. the data protection architecture as claimed in any one of claims 1 to 6, wherein said connector includes a first connection terminal and a second connection terminal, said first connection terminal being disposed on said first printed circuit board, said second connection terminal being disposed on said flexible circuit board, said first connection terminal being electrically connected to said second connection terminal.
10. An electronic device, characterized in that it comprises a data protection structure according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222505981.8U CN218388089U (en) | 2022-09-21 | 2022-09-21 | Data protection structure and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222505981.8U CN218388089U (en) | 2022-09-21 | 2022-09-21 | Data protection structure and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218388089U true CN218388089U (en) | 2023-01-24 |
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ID=84952873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222505981.8U Active CN218388089U (en) | 2022-09-21 | 2022-09-21 | Data protection structure and electronic equipment |
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| Country | Link |
|---|---|
| CN (1) | CN218388089U (en) |
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2022
- 2022-09-21 CN CN202222505981.8U patent/CN218388089U/en active Active
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