CN202026524U

CN202026524U - Electrostatic inhibitor for PCB layout

Info

Publication number: CN202026524U
Application number: CN2011200987477U
Authority: CN
Inventors: 陈佳宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-07
Filing date: 2011-04-07
Publication date: 2011-11-02
Anticipated expiration: 2021-04-07

Abstract

The utility model provides an electrostatic inhibitor for PCB layout, which belongs to electronics. In order to keep the stability and convenience in mounting a PCB, a plurality of screw fixing holes are formed on the PCB for fix the position, conductive copper pillars allowing screws to penetrate are embedded at the screw fixing holes, a circuit layer formed by conductors and signal transmission parts connected with the circuit layer and allowing signals to be output and input are arranged on the PCB, besides, a conductive copper layer for conduction is arranged on the circuit layer and positioned at the conductive copper pillars and the signal transmission parts, hollow areas of 1-3mm are outwardly formed on all outer lateral walls of the conductive copper layer, and owing to the hollow areas, discharge between the conductive copper layer and the circuit layer is effectively isolated and is guided out of the PCB, and components on the PCB are prevented from damage.

Description

The PCB layout suppresses electrostatic equipment

Technical field

The utility model relates to electrical type, and particularly a kind of PCB layout suppresses electrostatic equipment, refers to a kind of PCB layout inhibition electrostatic equipment that additional materials also can significantly promote the inhibition electromagnetic interference (EMI) that need not to increase especially.

Background technology

Static discharges (ESD--Electro Static Discharge) and is meant two objects with different electrostatic potentials, because directly the induction of contact or electrostatic field causes that the electrostatic charge between two articles shifts, after the static electric field energy acquires a certain degree, puncture medium therebetween and the phenomenon of discharging.Electronic product make, produce, assemble, transport, in the process such as use, the probability that is subjected to the static discharge injury is very high.Therefore, the electrostatic discharge protective designing technique is the necessary technology of any electronic product.Especially commonly used ic component on the printed circuit board (PCB) in the electronic installation, its electrostatic discharge susceptivity height, add the trend toward miniaturization of present circuit, wherein employed components and parts also are tending towards microminiaturization, its withstand voltage reduction, anti-electrostatic impact ability weakens, thus the static electric field and the electrostatic induced current that produce by static discharge easily these high density components and parts on the circuit board are caused damage, in the time of seriously even can influence the operation of whole electronic apparatus system.

Develop rapidly, wide application of micro-electronic technology and electromagnetic environment along with science and technology becomes increasingly complex in recent years, and the Electromagnetic Environmental Effect of static discharge such as the problem of electromagnetic interference (EMI) and Electromagnetic Compatibility are more and more paid attention to.

Damage is described below at electrostatic discharge (ESD), Electro-Static Discharges (ESD) is the common cause that causes electronic building brick to damage, and ESD does not have appropriate " Grounded ground connection " and causes discharging the static that is had on health or the clothes and cause before processing module.If can find a ground connection bracelet, please wear it, if do not have, before touching any electronic component, especially touch the semi-finished product of not finishing protection as yet, remember to touch earlier one " Grounded ground connection " and do not have the metal object of surface coating.Wear the ground connection bracelet and can prevent that ESD from damaging, because of the reason of ESD generation and the mode difference that integrated circuit is discharged thereof, ESD is classified as following four classes at present:

(1) the human body discharge mode (Human-Body Model, HBM).

(2) the machine discharge mode (Machine Model, MM).

(3) the assembly charge mode (Charged-Device Model, CDM).

(4) the electric field induction pattern (Field-Induced Model, FIM).

And the mode of generally removing electromagnetic interference (EMI) is the device that other installing can be removed static, or increase the isolated from power layer to reach the reduction electromagnetic interference (EMI), and this kind improves electromagnetic interference (EMI) by structural variation and must increase its manufacturing cost, therefore certainly will cause puzzlement on the cost to manufacturing person.The problem that solves above-mentioned existence needs further to be improved.

The utility model content

The purpose of this utility model is to provide a kind of PCB layout to suppress electrostatic equipment, a kind ofly need not to increase additional materials and also can significantly promote the inhibition electromagnetic interference (EMI), this hollow area derives this circuit board with effective isolation via producing discharge between this conductive copper layer and the line layer, for avoiding damaging the assembly on this circuit board.

The utility model comprises: a circuit board, this circuit board forms plural screw fixed hole, bury a conduction copper column that supplies screw to wear underground in this screw fixed hole place, and the line layer that forms with conductor on this circuit board links a signal Transmission Part for signal output, input, and this line layer is laid a conductive copper layer for conduction, wherein this conductive copper layer is positioned at the hollow area that this conduction copper column lateral wall outwards forms a preset range, and wherein this conductive copper layer is positioned at conduction copper column and signal Transmission Part place and outwards forms a scope at least by 1 to 3 millimeter hollow area respectively at each lateral wall.

The utility model specifically comprises: a kind of PCD layout suppresses electrostatic equipment, comprise: a circuit board, this circuit board forms plural screw fixed hole, bury a conduction copper column that supplies screw to wear underground in this screw fixed hole place, and the line layer that forms with conductor on this circuit board links a signal Transmission Part for signal output, input, and this line layer is laid a conductive copper layer for conduction, wherein this conductive copper layer is positioned at the hollow area that this conduction copper column lateral wall outwards forms a preset range, is also outwards formed this hollow area of preset range in addition by its sidewall in this signal Transmission Part.

More comprise one for the static trimming assembly of doing fine setting at electromagnetic interference (EMI).

Wherein this static trimming assembly is electric capacity (capacitor) or magnetic bead (Bead).

Wherein the preset range of this hollow area is at least by 1 to 3 millimeter.

Wherein this signal Transmission Part is I/O.

Advantage of the present utility model is:

1, too many assembly can reach and suppress the electromagnetic interference (EMI) effect.

2, additionally use ESD significantly to reduce manufacturing cost.

Description of drawings

Fig. 1 is the schematic diagram of the utility model tool screw fixed hole.

Fig. 2 is a screw fixed hole profile of the present utility model.

Fig. 3 is the schematic diagram of the utility model tool signal Transmission Part.

Fig. 4 is a signal Transmission Part profile of the present utility model.

Fig. 5 is the schematic diagram of the utility model static trimming assembly.

Embodiment

As accompanying drawing 1 to shown in the accompanying drawing 3, schematic diagram for the utility model tool screw fixed hole, the schematic diagram of screw fixed hole profile and tool signal Transmission Part, find out and comprise by knowing among the figure: a circuit board 1, this circuit board 1 forms plural screw fixed hole 10, bury a conduction copper column 11 that supplies screw to wear underground in these screw fixed hole 10 places, and the line layer 12 that forms with conductor on this circuit board 1 links one for signal output, the signal Transmission Part 14(I/O of input), and this line layer 12 is laid a conductive copper layer 16 for conduction, wherein this conductive copper layer 16 is positioned at the hollow area 160 that these conduction copper column 11 lateral walls outwards form a preset range, also outwards form in addition this hollow area 160 of preset range by its sidewall in this signal Transmission Part 14, wherein on conductive copper layer 16 formed each hollow area 160 its scope at least by 1 to 3 millimeter.

As shown in Figure 2, being embedded in screw fixed hole 10 places and utilizing screw 2 to be arranged in the conduction copper column 11 with conduction copper column 11 is example, protective capacities for static discharge (EMD) Yu the electromagnetic interference (EMI) of accentuator plate 1, utilization conductive copper layer 16 corresponds to the conduction copper column 11 in the screw fixed hole 10, and conductive copper layer 16 formed hollow area 160 are stretched out by conduction copper column 11 lateral walls, and the scope of its extension is at least by 1 to 3 millimeter.

Shown in accompanying drawing 3 and accompanying drawing 4, schematic diagram and signal Transmission Part profile for the utility model tool signal Transmission Part, the described signal Transmission Part of this part 14(I/O) applies to SMD LED surface-mount device LED assembly or SMD assembly (SMD:surface-mount device) and be example, mainly outwards form the hollow area 160 of certain limit by signal Transmission Part 14 sidewalls, wherein on conductive copper layer 16 formed each hollow area 160 its scope at least by 1 to 3 millimeter.

Except the hollow area 160 of utilization conductive copper layer 16 reach best inhibition electromagnetic interference (EMI) effect, also can directly adjust inching in conjunction with the static trimming assembly to electromagnetic interference (EMI).As accompanying drawing 5, schematic diagram for the utility model static trimming assembly, on circuit board 1, can be electric capacity (capacitor) or magnetic bead (Bead)) in conjunction with a plurality of static trimming assembly 118(, can directly finely tune by each static trimming assembly 118, with the generation of effective inhibition electromagnetic interference (EMI) at the electromagnetic interference (EMI) that each position produced.

Can effectively isolate via producing discharge between this conductive copper layer 16 and the line layer 12 and deriving this circuit board 1, to avoid damaging the assembly on this circuit board 1 by aforementioned hollow area 16.

Claims

1. A kind of PCD layout suppresses electrostatic equipment, it is characterized in that comprising: a circuit board, this circuit board forms plural screw fixed hole, bury a conduction copper column that supplies screw to wear underground in this screw fixed hole place, and the line layer that forms with conductor on this circuit board links a signal Transmission Part for signal output, input, and this line layer is laid a conductive copper layer for conduction, wherein this conductive copper layer is positioned at the hollow area that this conduction copper column lateral wall outwards forms a preset range, is also outwards formed this hollow area of preset range in addition by its sidewall in this signal Transmission Part.

2. PCB layout according to claim 1 suppresses electrostatic equipment, it is characterized in that: more comprise one for the static trimming assembly of doing fine setting at electromagnetic interference.

3. PCB layout according to claim 2 suppresses electrostatic equipment, and it is characterized in that: wherein this static trimming assembly is electric capacity or magnetic bead.

4. PCB layout according to claim 1 suppresses electrostatic equipment, and it is characterized in that: wherein the preset range of this hollow area is at least by 1 to 3 millimeter.

5. PCB layout according to claim 1 suppresses electrostatic equipment, and it is characterized in that: wherein this signal Transmission Part is I/O.