CN103607838B - A kind of printed circuit board (PCB) - Google Patents
A kind of printed circuit board (PCB) Download PDFInfo
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- CN103607838B CN103607838B CN201310560550.4A CN201310560550A CN103607838B CN 103607838 B CN103607838 B CN 103607838B CN 201310560550 A CN201310560550 A CN 201310560550A CN 103607838 B CN103607838 B CN 103607838B
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- circuit board
- printed circuit
- pcb
- groove
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Abstract
The invention discloses a kind of printed circuit board (PCB), the printed circuit board (PCB) has shielding ground, systematically with power supply, it is described systematically on be provided with to be additionally provided with least one element, the printed circuit board (PCB) and can block the groove of electric current, the groove be located at the shielding ground and it is described systematically between；Be respectively turned on the power supply it is described shielding and it is described systematically, for discharge it is described shielding and it is described systematically on electrostatic.The printed circuit board (PCB) that the present invention is provided, solves the element of existing printed circuit board system ground, the technical problem easily damaged by electrostatic impact.
Description
Technical field
The present invention relates to antistatic technique field, more particularly to a kind of printed circuit board (PCB) with antistatic protection function.
Background technology
Static discharge, refers to the object with different electrostatic potentials, electric charge transfer caused by adjacent to each other or direct contact.
During static discharge, it is easy to damage sensitive circuit element.Especially for printed circuit board (PCB), existing printed circuit board (PCB) is commonly used
To substantial amounts of integrated circuit component, its electrostatic discharge susceptivity height, resistance to force down, resistance to electrostatic impact ability is weak, therefore is highly susceptible to quiet
The infringement of discharge of electricity, or even further have influence on the normal operation of whole electronic apparatus system.Accordingly, it would be desirable to printed circuit board (PCB)
Electrostatic protection is carried out, electrostatic is discharged in time.
For sandwich construction printed circuit board (PCB), being specially provided with ground plane is used for release electrostatic, for example, set on ground plane
Through hole is equipped with, screw is set in through hole and metal is painted with through-hole wall, is connected with other each layers, by electrostatic guide extremely
The earth terminal of ground plane is discharged.
For with systematically, shielding and power supply ground printed circuit board (PCB), and for above-mentioned sandwich construction print electricity
Each layer circuit board of road plate, it is also desirable to carry out antistatic protection, it is contemplated that the factor such as compact conformation, is not suitable for using above-mentioned
The labyrinth such as through hole and screw, and mostly by the way of single-point grounding, i.e., carried out by the power supply at power interface quiet
Electricity release, concrete structure is referring to Fig. 1, in such printed circuit board (PCB), and screen layer and the shielding ground 100 of external interface 600 are turned on,
Each element 210 and systematically 200 conductings, shielding ground 100 and systematically 200 be combined into it is one conductive overall and 300 turned on power supply,
The earth terminal of power interface 700 and power supply ground 300 conductings, the electrostatic from the screen layer of external interface 600, via shielding ground 100
And/or systematically 200 with flowing to power supply 300, carry out Electro-static Driven Comb.Obviously, when shielding ground 100 is by electrostatic impact, electrostatic
While with flowing to power supply, the element 210 systematically on 200 can be impacted, damage will certainly be caused to element 210, or even make
The normal operation of electronic apparatus system is affected.
Based on this, the invention provides a kind of printed circuit board (PCB), can prevent the element of printed circuit board system ground by
To electrostatic impact.
The content of the invention
The printed circuit board (PCB) that the present invention is provided, solves the element of existing printed circuit board system ground, easily by
Electrostatic impact and the technical problem damaged.
The invention provides a kind of printed circuit board (PCB), the printed circuit board (PCB) has shielding ground, systematically with power supply, institute
State and at least one element be provided with systematically,
The groove of electric current can be blocked by being additionally provided with the printed circuit board (PCB), and the groove is located at the shielding ground and described
Between systematically；
Be respectively turned on the power supply it is described shielding and it is described systematically, for discharge it is described shielding and the system
The electrostatic of ground.
It is preferred that, it is located on the groove power supply.
It is preferred that, it is located at the boundary of the printed circuit board (PCB), one end connection or adjacent of the groove power supply
The nearly power supply, the other end extends to the corresponding border of the printed circuit board (PCB).
It is preferred that, the groove is made up of a plurality of straightway groove.
It is preferred that, the even width of the groove.
It is preferred that, the width of the groove is set to 0.5mm-1.5mm.
It is preferred that, the printed circuit board (PCB) has external interface, the screen layer of the external interface and shielding ground electricity
Connection, the connectivity port of the external interface is plugged into pin ends, the pin ends be located at it is described systematically on.
It is preferred that, the external interface is HDMI.
It is preferred that, the printed circuit board (PCB) has a power interface, the earth terminal of the power interface and the power supply it is electric
Connection, the supply port of the power interface is systematically electrically connected with described.
It is preferred that, it is described systematically for data signal or analog signal.
In summary, the printed circuit board (PCB) that the present invention is provided, by the groove of special setting, by from the quiet of external interface
Electricity, guides it to be discharged with flowing into power supply along shielding, and groove can effectively prevent electrostatic from being directly impinging on systematically
Each element, therefore, the present invention need not set the complex components such as through hole and screw, you can realize for the quiet of printed circuit board (PCB)
Electricity protection.
Further, the printed circuit board (PCB) that provides of the present invention, be applicable not only to systematically, shielding and power supply ground
Circuit board, and suitable for the printed circuit board (PCB) of any sandwich construction with or without ground plane, for each layer of tool
There is all applicable technical scheme of circuit board of external interface, it is applied widely.
Further, the present invention is using the scheme for setting groove to carry out electrostatic protection, than existing electrostatic protection scheme,
The present invention is in processing printed circuit board, in the trench region being pre-designed, and forbids spreading copper, processing technology is simple, effectively
Control the cost of available circuit plate antistatic technique.
Brief description of the drawings
Fig. 1 is the schematic diagram of existing printed circuit board (PCB)；
Fig. 2 is the structural representation of the embodiment of the present invention one；
Fig. 3 is the structural representation of the embodiment of the present invention two；
Fig. 4 is the structural representation of the embodiment of the present invention three；
Fig. 5 is the structural representation of the embodiment of the present invention four.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment one
Referring to Fig. 2, this embodiment offers a kind of printed circuit board (PCB), the printed circuit board (PCB) has shielding ground 100, systematically
200 and power supply 300, the groove 400 of electric current can be blocked by being additionally provided with the printed circuit board (PCB), and the groove 400 is located at institute
State shielding ground 100 and described systematically between 200, for realize the shielding ground 100 and it is described systematically 200 insulation every
It is disconnected, the electric current of the both sides of groove 400 is blocked, and for guiding the flow direction of electrostatic；The power supply 300 be respectively turned on it is described
Shielding ground 100 and described systematically 200.Generally, at least one element 210, such as CPU systematically are provided with 200 described
Module etc., according to different circuit board functions, this systematically 200 can be data signal, analog signal any of；
100 screen layer generally with all kinds of external interfaces of the shielding ground is electrically connected.
When shielding ground 100 is by electrostatic impact, the electrostatic is blocked by groove 400, will not be directly impinging systematically
200 regions, enter without producing damage to the element 210 on systematically 200, the electric current under the guiding function of groove 400, and
According to path is short and the low rule preferentially turned on of resistance, electrostatic flow direction and the shielding 100 power supplys being connected 300, enter
And by power supply 300 by Electro-static Driven Comb.
Therefore, the present invention by the shielding ground 100 and it is described groove 400 is systematically set between 200, be prevented effectively from
Systematically the element 210 on 200 is by electrostatic impact.
The power supply 300 position can according to printed circuit board (PCB) circuit lay demand and specifically set, in the implementation
In example, to ensure that the barrier effect of groove 400 is optimal, 300 it is located on the groove 400 power supply, the groove 400
Two ends are extended respectively on corresponding two borders of the printed circuit board (PCB).
To reduce the design difficulty and difficulty of processing of groove 400, and in order to ensure the degree of accuracy of the processing of groove 400, institute
State groove 400 to be preferably arranged to, be made up of a plurality of straightway.Also, in order to further ensure that the current blocking of groove 400 is imitated
Really, prevent the insulation effect at relative narrower from failing, the groove 400 is preferably arranged to even width.The width of the groove 400
Degree is traditionally arranged to be as far as possible greatly, but based on the effective rate of utilization of printed circuit board (PCB) plate face, is traditionally arranged to be and is no more than
1.5mm, is proved through test of many times, and width is less than 0.5mm, and its insulation effect is greatly reduced, therefore, the width of the groove 400
It is preferably arranged to 0.5mm-1.5mm.
Embodiment two
Referring to Fig. 3, this embodiment disclose a kind of printed circuit board (PCB), the embodiment be on the basis of embodiment one, it is right
In the power supply 300 position another preferred scheme, in addition, the other technologies scheme disclosed in embodiment one
Belong to the present embodiment, description is not repeated herein.
Specifically, in order to ensure the current blocking best results of groove 400,300 it can also be and be located at the power supply
The boundary of the printed circuit board (PCB), one end of the groove 400 with connecting the power supply 300, the other end extends to the print
The corresponding border of printed circuit board.That is, the groove 400 and the power supply 300 link together, complete jointly to institute
State shielding ground 100 and it is described systematically 200 separation, the groove 400 therein be used for realize block it is described shielding ground 100 Hes
The electric current systematically between 200,300 is respectively turned on the shielding ground 100 and institute the power supply therein for realization
State systematically 200.
Based on embodiment one it is same the reasons why, when shielding ground 100 by electrostatic impact when, the electrostatic is by the institute of groove 400
Block, systematically 200 region will not be directly impinging, enter and produce damage, the electric current without the element 210 to systematically 200
Under the guiding function of groove 400, and according to path is short and the low rule preferentially turned on of resistance, electrostatic flow direction and the shielding
The power supply that ground 100 is connected 300, and then by power supply 300 by Electro-static Driven Comb.
Embodiment three
Referring to Fig. 4, this embodiment disclose a kind of printed circuit board (PCB), the embodiment be on the basis of embodiment one, it is right
In the power supply 300 position another preferred scheme, in addition, the other technologies scheme disclosed in embodiment one
Belong to the present embodiment, description is not repeated herein.
Specifically, the power supply of the embodiment 300 be located at the printed circuit board (PCB) boundary, the groove
400 one end is neighbouring but with not contacting the power supply 300, and the other end extends to the corresponding border of the printed circuit board (PCB).Also
To say, the groove 400 adjacent to the power supply 300 one end, with the end between neighbouring border, with disconnect area 500,
The shielding in the disconnection area 500 100 and it is described systematically 200 be conducted, 300 be located at the disconnection area power supply
500, and the power supply 300 and border and be all not connected with the end of groove 400, and then cause the He of groove 400
300 simply realize the shielding ground 100 and systematically 200 separation generally the power supply, and it is unrealized complete
Separate.When specific design is processed, 300 it can be shown disposed on systematically on 200 or positioned at institute the power supply
State shielding ground 100 on, as long as meet its distance described in systematically 200 element 210 relatively far away from.
In the embodiment, the power supply 300 with border and/or the groove 400, it is not necessary to be in contact, thus processing
Required precision is relatively low, reduces difficulty of processing, reduce further design and processing cost.
Likewise, based on embodiment one it is same the reasons why, when shielding ground 100 by electrostatic impact when, most of electrostatic
Blocked by groove 400, systematically 200 region will not be directly impinging, entered without being produced to the element 210 on systematically 200
Raw damage, it is most of under the guiding function of the groove 400, and according to path is short and the low rule preferentially turned on of resistance
Electrostatic can flow directly into the power supplys that are connected of shielding ground 100 300, and then by power supply 300 by Electro-static Driven Comb.
In addition, in the embodiment one, two and three, the power supply 300 be located at or the neighbouring printed circuit board (PCB) border
Only it is preferred scheme, to meet the design needs that circuit board is different, 300 can also be located remotely from the printing power supply
The other positions on the border of circuit board, 300 are connected or adjoining its power supply with the groove 400, also can foundation
Specifically need and set.
Example IV
As shown in figure 5, this embodiment disclose a kind of printed circuit board (PCB), the embodiment is further changing to embodiment three
Enter, the technical scheme disclosed in embodiment three falls within the embodiment, description is not repeated in technical scheme disclosed in embodiment three.
Specifically, in the embodiment, there is external interface 600 and power interface 700 on the printed circuit board (PCB).
300 electrically connect, the feeder ear of the power interface 700 earth terminal of the power interface 700 and the power supply
Mouthful systematically 200 electrically connect with described by power connector end 310, i.e. the power connector end 310 described in systematically
On 200.
The external interface 600 for example can be HDMI, the screen layer of the external interface 600 and the shielding ground
100 electrical connections, for example, can be to be connected to shielding ground 100 by the four shielding ground connection end 110 of the rectangular arrangement of diagram,
The connectivity port of the external interface 600 is plugged into pin ends 120, and the pin ends 120 are located at described systematically on 200, i.e. institute
State pin ends 120 and the element 210 systematically on 200 is located at the same side of the groove 400.The external interface 600
Signal is transmitted to systematically 200 respective element 210 via pin ends 120, and its screen layer is blocked systematically by groove 400
Shielding outside 200 on 100, by the electrostatic on screen layer it is instant by shielding with delivering to power supply 300 release of ground 100, prevent
Only the element 210 on electrostatic impact to systematically 200 causes damage.
The printed circuit board (PCB) of the embodiment is mainly used in the electronic equipment of connection HDMI data wires, and the electronic equipment is used
The printed circuit board (PCB) of the present invention, can effectively prevent that the elements such as CPU module from being impacted by electrostatic, extends service life.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (8)
1. a kind of printed circuit board (PCB), the printed circuit board (PCB) has shielding ground, systematically with power supply, described systematically upper to set
There is at least one element, it is characterised in that
The groove of electric current can be blocked by being additionally provided with the printed circuit board (PCB), and the groove is located at the shielding ground and the system
Between ground；
Be respectively turned on the power supply it is described shielding and it is described systematically, for discharge it is described shielding and it is described systematically
Electrostatic；
It is located at the boundary of the printed circuit board (PCB), one end of the groove is adjacent to the power supply, the other end power supply
Extend to the corresponding border of the printed circuit board (PCB)；
One end of the groove adjacent to the power supply when, have between the border closed on the power supply and disconnect area, this breaks
Systematically it is conducted with opening the shielding in area, is located in the disconnection area with described the power supply, and the power supply
All it is not connected with border and with the end of groove.
2. printed circuit board (PCB) according to claim 1, it is characterised in that the groove is made up of a plurality of straightway groove.
3. printed circuit board (PCB) according to claim 2, it is characterised in that the even width of the groove.
4. printed circuit board (PCB) according to claim 3, it is characterised in that the width of the groove is set to 0.5mm-
1.5mm。
5. printed circuit board (PCB) according to claim 1, it is characterised in that the printed circuit board (PCB) has external interface, institute
The screen layer for stating external interface is electrically connected with the shielding, and the connectivity port of the external interface is plugged into pin ends, described
Pin ends be located at it is described systematically on.
6. printed circuit board (PCB) according to claim 5, it is characterised in that the external interface is HDMI.
7. printed circuit board (PCB) according to claim 1, it is characterised in that the printed circuit board (PCB) has power interface, institute
The earth terminal for stating power interface is electrically connected with the power supply, and the supply port of the power interface is systematically electrically connected with described
Connect.
8. printed circuit board (PCB) according to claim 1, it is characterised in that it is described systematically for data signal or simulation
Signal ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310560550.4A CN103607838B (en) | 2013-11-12 | 2013-11-12 | A kind of printed circuit board (PCB) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310560550.4A CN103607838B (en) | 2013-11-12 | 2013-11-12 | A kind of printed circuit board (PCB) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103607838A CN103607838A (en) | 2014-02-26 |
| CN103607838B true CN103607838B (en) | 2017-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310560550.4A Active CN103607838B (en) | 2013-11-12 | 2013-11-12 | A kind of printed circuit board (PCB) |
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| Country | Link |
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| CN (1) | CN103607838B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104038866A (en) * | 2014-06-30 | 2014-09-10 | 青岛歌尔声学科技有限公司 | Circuit board with static protection function and Bluetooth earphone |
| CN110967852B (en) * | 2019-11-20 | 2021-04-27 | Tcl华星光电技术有限公司 | Liquid crystal display device having a plurality of pixel electrodes |
| CN113271089B (en) * | 2021-04-14 | 2023-04-11 | 杭州士兰微电子股份有限公司 | Grid driving circuit and intelligent power module thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1787718A (en) * | 2004-12-09 | 2006-06-14 | 鸿富锦精密工业（深圳）有限公司 | Printed circuit board capable of preventing electrostatic discharging |
| CN102006713A (en) * | 2009-05-05 | 2011-04-06 | 北京中庆微数字设备开发有限公司 | Circuit board with static protection structure |
| CN102006714A (en) * | 2009-05-26 | 2011-04-06 | 北京中庆微数字设备开发有限公司 | Electrostatic protection structure-containing circuit board |
| CN203645908U (en) * | 2013-11-12 | 2014-06-11 | 青岛歌尔声学科技有限公司 | Printed circuit board |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4948260B2 (en) * | 2007-05-18 | 2012-06-06 | 三菱電機株式会社 | Static electricity protection structure |
-
2013
- 2013-11-12 CN CN201310560550.4A patent/CN103607838B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1787718A (en) * | 2004-12-09 | 2006-06-14 | 鸿富锦精密工业（深圳）有限公司 | Printed circuit board capable of preventing electrostatic discharging |
| CN102006713A (en) * | 2009-05-05 | 2011-04-06 | 北京中庆微数字设备开发有限公司 | Circuit board with static protection structure |
| CN102006714A (en) * | 2009-05-26 | 2011-04-06 | 北京中庆微数字设备开发有限公司 | Electrostatic protection structure-containing circuit board |
| CN203645908U (en) * | 2013-11-12 | 2014-06-11 | 青岛歌尔声学科技有限公司 | Printed circuit board |
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| Publication number | Publication date |
|---|---|
| CN103607838A (en) | 2014-02-26 |
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