CN206149583U - Printed circuit board structure of electromagnetism shadow shield - Google Patents
Printed circuit board structure of electromagnetism shadow shield Download PDFInfo
- Publication number
- CN206149583U CN206149583U CN201621072366.0U CN201621072366U CN206149583U CN 206149583 U CN206149583 U CN 206149583U CN 201621072366 U CN201621072366 U CN 201621072366U CN 206149583 U CN206149583 U CN 206149583U
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- dielectric layer
- printed circuit
- layer
- circuit board
- board structure
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Abstract
The utility model provides a printed circuit board structure of electromagnetism shadow shield, including dielectric layer and signal line, be formed with the shielding cavity in the dielectric layer, be formed with the copper layer on the top surface of shielding cavity and the circumference lateral wall, the signal line sets up on the bottom surface of shielding cavity. The utility model discloses can shield the produced electromagnetic signal of the signals layer that is located the dielectric layer both sides to prevent to produce electromagnetic interference to the signal line that lies in the shielding cavity, have that simple structure, thickness are little, a light in weight, characteristics with low costs.
Description
Technical field
This utility model is related to art of printed circuit boards, and more particularly to a kind of printed circuit of electromagnetism shadow shield is hardened
Structure.
Background technology
With the continuous development of electronic product, nowadays electronic product is into our like the shadow following the person things, printing
Circuit board also becomes the core component of electronic product, will not only possess conducting, in addition it is also necessary to possess heat conduction, not only will be in digital electricity
Work in road, in addition it is also necessary to work under analog circuit environment.
Present electronic product all can be worked under analog circuit, with two kinds of environment of digital circuit substantially, so one
A little electronic products, during circuit design, the shielding work of structure just becomes extremely important.Electromagnetic interference is one and modal asks
Topic, for example：Television noise, radio noise, and aircraft is in landing, is easily subject to the sent electromagnetic wave signal of electronic product
Disturb and cause abnormal situation of electronic instrument etc..These are all the examples of electronic product electromagnetic interference.
Nowadays electronic product is the target for realizing that lightweight, volume is ultra-thin, compact, to cater to the need that consumer is easy to carry about with one
Ask, when electron product circuit is designed, need highly integrated shaping-orientation：Using identical function but volume or area are less
Component.If the metal shielding of design anti-electromagnetic interference on PCB originally can be taken away, become extremely important, crucial, so
One can greatly reduce the volume of electronic product, weight.This is also the printed circuit board architectural source inspiration of electromagnetism shadow shield.
Utility model content
This utility model provide a kind of printed circuit board structure of electromagnetism shadow shield, with solve in prior art in order to
Realize that electromagnetic shielding needs special layers of copper, so that circuit plate thickness is big, weight is big, the problem of high cost.
To solve the above problems, as one side of the present utility model, there is provided a kind of printing of electromagnetism shadow shield
Board structure of circuit, including dielectric layer and holding wire, are formed with shielding cavity, the top surface and circumference of the shielding cavity in the dielectric layer
Layers of copper is formed with the wall of side, the holding wire is arranged on the bottom surface of the shielding cavity.
Preferably, the dielectric layer includes first medium layer and second dielectric layer, is formed with recessed on the first medium layer
Sunken portion, the second dielectric layer are connected with the surface of the first medium layer and close to form the shielding by the depressed part
Chamber.
Preferably, the holding wire is connected with the second dielectric layer.
Preferably, the printed circuit board structure is also included with the first medium layer away from the second dielectric layer
First signals layer of surface connection.
Preferably, the printed circuit board structure is also included with the second dielectric layer away from the first medium layer
The secondary signal layer of surface connection.
Electromagnetic signal produced by signals layer positioned at dielectric layer both sides can be shielded by this utility model, so as to anti-
The holding wire for being only pointed to shield intracavity produces electromagnetic interference, the characteristics of with simple structure, little, lightweight thickness, low cost.
Description of the drawings
Fig. 1 schematically shows structural representation of the present utility model.
Reference in figure：1st, holding wire；2nd, shielding cavity；3rd, layers of copper；4th, first medium layer；5th, second dielectric layer；6th,
One signals layer；7th, secondary signal layer.
Specific embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing, but this utility model can be by right
It is required that the multitude of different ways for limiting and covering is implemented.
As shown in figure 1, this utility model provides a kind of printed circuit board structure of electromagnetism shadow shield, including dielectric layer
With holding wire 1, shielding cavity 2 is formed with the dielectric layer, on the top surface and circumferential side wall of the shielding cavity 2, layers of copper 3 is formed with,
The holding wire 1 is arranged on the bottom surface of the shielding cavity 2.
Holding wire of the present utility model 1 is arranged in shielding cavity 2, is provided with for carrying out electromagnetism on the side wall of shielding cavity 2
The layers of copper 3 of shielding, therefore, it can be shielded the electromagnetic signal produced by the signals layer positioned at dielectric layer both sides, prevents right
Holding wire 1 produces electromagnetic interference, therefore need not increase between the signals layer of dielectric layer both sides and holding wire 1 for shielding
Copper sheet layer, it is to avoid unnecessary layers of copper design, the characteristics of with simple structure, little, lightweight thickness, low cost.
Preferably, the dielectric layer includes first medium layer 4 and second dielectric layer 5, is formed with the first medium layer 4
Depressed part, the second dielectric layer 5 are connected with the surface of the first medium layer 4 and close to form the screen by the depressed part
Cover chamber 2.For example, depressed part can be formed by way of controlled depth milling, after depressed part is formed, then by first medium layer 4
Get up with the pressing of second dielectric layer 5.Preferably, the holding wire 1 is connected with the second dielectric layer 5.
Preferably, the printed circuit board structure is also included with the first medium layer 4 away from the second dielectric layer 5
Surface connection the first signals layer 6.
Preferably, the printed circuit board structure is also included with the second dielectric layer 5 away from the first medium layer 4
Surface connection secondary signal layer 7.
Preferred embodiment of the present utility model is the foregoing is only, this utility model is not limited to, for this
For the technical staff in field, this utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. are should be included within protection domain of the present utility model.
Claims (5)
1. a kind of printed circuit board structure of electromagnetism shadow shield, it is characterised in that including dielectric layer and holding wire (1), described
Shielding cavity (2) is formed with dielectric layer, on the top surface and circumferential side wall of the shielding cavity (2), layers of copper (3), the signal is formed with
Line (1) is arranged on the bottom surface of the shielding cavity (2).
2. the printed circuit board structure of electromagnetism shadow shield according to claim 1, it is characterised in that the dielectric layer bag
First medium layer (4) and second dielectric layer (5) are included, on the first medium layer (4), depressed part, the second dielectric layer is formed with
(5) it is connected with the surface of the first medium layer (4) and closes to form the shielding cavity (2) by the depressed part.
3. the printed circuit board structure of electromagnetism shadow shield according to claim 2, it is characterised in that the holding wire
(1) it is connected with the second dielectric layer (5).
4. the printed circuit board structure of electromagnetism shadow shield according to claim 2, it is characterised in that the printed circuit
Hardened structure also includes the first signals layer being connected away from the surface of the second dielectric layer (5) with the first medium layer (4)
(6)。
5. the printed circuit board structure of electromagnetism shadow shield according to claim 4, it is characterised in that the printed circuit
Hardened structure also includes the secondary signal layer being connected away from the surface of the first medium layer (4) with the second dielectric layer (5)
(7)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621072366.0U CN206149583U (en) | 2016-09-22 | 2016-09-22 | Printed circuit board structure of electromagnetism shadow shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621072366.0U CN206149583U (en) | 2016-09-22 | 2016-09-22 | Printed circuit board structure of electromagnetism shadow shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206149583U true CN206149583U (en) | 2017-05-03 |
Family
ID=58619825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621072366.0U Active CN206149583U (en) | 2016-09-22 | 2016-09-22 | Printed circuit board structure of electromagnetism shadow shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206149583U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106231787A (en) * | 2016-09-22 | 2016-12-14 | 深圳市迅捷兴科技股份有限公司 | Printed circuit plate structure of electromagnetism shadow shield and preparation method thereof |
-
2016
- 2016-09-22 CN CN201621072366.0U patent/CN206149583U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106231787A (en) * | 2016-09-22 | 2016-12-14 | 深圳市迅捷兴科技股份有限公司 | Printed circuit plate structure of electromagnetism shadow shield and preparation method thereof |
| CN106231787B (en) * | 2016-09-22 | 2019-03-08 | 深圳市迅捷兴科技股份有限公司 | Printed circuit board structure of electromagnetism shadow shield and preparation method thereof |
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