CN1812690A - Antielectrostatic discharging one-layer or multilayer printed circuit board and circuit selecting method thereof - Google Patents
Antielectrostatic discharging one-layer or multilayer printed circuit board and circuit selecting method thereof Download PDFInfo
- Publication number
- CN1812690A CN1812690A CN 200510005770 CN200510005770A CN1812690A CN 1812690 A CN1812690 A CN 1812690A CN 200510005770 CN200510005770 CN 200510005770 CN 200510005770 A CN200510005770 A CN 200510005770A CN 1812690 A CN1812690 A CN 1812690A
- Authority
- CN
- China
- Prior art keywords
- circuit
- zone
- selects
- selecting method
- printed circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Elimination Of Static Electricity (AREA)
- Tests Of Electronic Circuits (AREA)
- Structure Of Printed Boards (AREA)
Abstract
A single layer or multiplayer printed circuit being able to resist static discharge is prepared as setting the first circuit selection region in preset distance to the second circuit selection region, setting an isolation element between the first and the second circuit selection region to attenuate impact generated by static discharge for avoiding impact to be transmitted from the first circuit selection region to the second circuit selection region.
Description
Technical field
The present invention discloses a kind of single or multiple lift printed circuit board (PCB) and circuit is selected (routing) method, but is meant a kind of single or multiple lift printed circuit and circuit selecting method thereof of anti-electrostatic discharging especially.
Background technology
In order to promote the reliability of commercially available electronic product, before product is openly peddled, must to test to obtain an authentication number, just this electronic product can formally sell then by some safety standards earlier.No matter Europe, America or countries in Asia all have relevant Valuation Standard, though detailed test event difference, but its common test order includes: electromagnetic interference (Electro Magnetic Interference, EMI), electromagnetic susceptibility (Electro Magnetic Susceptibility, EMS) and static discharge (Electrostatic Discharge, ESD) ... etc.
Electrostatic discharge testing simulation human body with static or handheld tool to influence that electronic product caused.Test mode can be divided into atmospherical discharges and contact discharge according to the IEC61000-4-2 standard.Atmospherical discharges is used in insulating surface, and it begins discharge after near determinand with static gun, and its test voltage is the 2-15 kilovolt, and discharge back static gun also need touch test point electric current is imported on the object under test.Contact discharge directly is contacted with the screw of determinand, the joint that exposes or other metal parts that may contact with static gun, and its test voltage is the 2-8 kilovolt.
For the infringement of effectively avoiding atmospherical discharges that product is caused, the shell of product can use some special conductive composite material usually.Conductive composite material is that the plastic rubber substrate of insulating properties is added conductive material to possess the function of conduction, antistatic, and the material additive that the typical case has conductivity comprises carbon black powders, carbon fiber, metallic fiber and metal dust.Therefore conductive composite material can not produce a large amount of electrostatic charges, and can dissipate electrostatic charge before being accumulated to the extent of injury.
Then comparatively complicated as for contact discharge; because electrostatic charge can be via the input and output connectivity port of exposing (Input/Output connector); for example: supply hub; enter printed circuit board (PCB); if in product design process, near the input and output connectivity port, do not add protective circuit; and suitably electrostatic charge is imported earth terminal, then electrostatic charge directly burns out the chip on the printed circuit board (PCB), and then electronic product is caused nonvolatil damage possibly.
Summary of the invention
Therefore, but main purpose of the present invention one be to provide a kind of single or multiple lift printed circuit of anti-electrostatic discharging and circuit selecting method thereof to reduce the injury that static discharge causes electronic product.
According to the present invention, it discloses a kind of circuit selecting method that is used for a single or multiple lift printed circuit board (PCB) with anti-electrostatic discharging.This circuit selecting method includes: one first circuit is set selects the zone; One second circuit is set selects the zone, wherein this first circuit selects zone and this second circuit to select zone at least one preset distance of being separated by; And connect obstruct (blocking) element between this first circuit selection zone and this second circuit selection zone, be used for the impact that decays and produce, and avoid this impact to select zone to be passed to this second circuit and select the zone via this first circuit by static discharge.
According to the present invention, but it discloses a kind of single or multiple lift printed circuit board (PCB) of anti-electrostatic discharging.This single or multiple lift printed circuit board (PCB) includes: one first circuit is selected the zone, is used for that circuit is carried out in an input and output connectivity port and selects; One second circuit is selected the zone, is used for that an electronic component on this single or multiple lift printed circuit board (PCB) is carried out circuit and selects, and wherein this first circuit selects zone and this second circuit to select zone at least one preset distance of being separated by; And a barrier element, be electrically connected to this first circuit and select zone and this second circuit to select between zone, be used for the impact that decays and produce, and it is regional to avoid this impacts to select zone to be passed to this second circuit selection via this first circuit by static discharge.
Description of drawings
Fig. 1 is the schematic diagram of an embodiment of single or multiple lift printed circuit board (PCB) of the present invention.
Fig. 2 is the flow chart of the circuit selecting method of anti-electrostatic discharging of the present invention.
The main element symbol description
| 10 | The single or multiple lift printed circuit board (PCB) | 20、40 | Circuit is selected the zone |
| 22、42 | The conducting metal face | 24 | The input and output connectivity port |
| 44、46 | Integrated circuit | 48、52 | Printed circuit cable |
| 60 | Raceway groove | 80 | Barrier element |
Embodiment
See also Fig. 1, Fig. 1 is the schematic diagram of an embodiment of single or multiple lift printed circuit board (PCB) 10 of the present invention.Be provided with a plurality of circuits in the single or multiple lift printed circuit board (PCB) 10 and select zone 20,40, one raceway groove (that is naked sky, no metal ingredient) 60 and one barrier element 80.Wherein, circuit selects zone 20,40 to be arranged on the same wiring layer, circuit selects zone 20 to be provided with one deck conducting metal face (oblique line part) 22 and one input and output connectivity port (Input/Output connector) 24, is used for connecting the device (not shown) that is positioned at single or multiple lift printed circuit board (PCB) 10 outsides.Circuit selects zone 40 to be provided with conducting metal face (oblique line part) 42, a plurality of integrated circuit 44,46 and many printed circuit cables 48,52, is used for connecting integrated circuit 44,46.In the present embodiment, conducting metal face 22,42 produces at single or multiple lift printed circuit board (PCB) 10 upper berth copper, its main purpose is to provide earth terminal to elements all on the single or multiple lift printed circuit board (PCB) 10, and in the process of shop copper, can avoid the printed circuit cable 48,52 on the single or multiple lift printed circuit board (PCB) 10 and the solder joint (pad) of integrated circuit 44,46, with the situation of avoiding being short-circuited.Because shop copper is that a technology well-known in the art is not so give unnecessary details one by one at this.Therefore, the grounding pin (groundpin) of all integrated circuits 44,46 and input and output connectivity port 24 or shielding pin (shielding pin) all can be connected on the conducting metal face 22,42.
Raceway groove 60 is used for intercepting circuit and selects zone 20,40, and in the present embodiment, the minimum widith of raceway groove 60 is 1.25 centimetres (mm), and input and output connectivity port 24 is a supply hub, earpiece holes etc.When carrying out electrostatic discharge testing, electrostatic charge may and then enter conducting metal face 22 via the grounding pin (ground pin) of input and output connectivity port 24 or shielding pin (shielding pin).Because raceway groove 60 can intercept conducting metal face 22,42, so electrostatic charge can not be delivered to conducting metal face 42 by conducting metal face 22, selects integrated circuit 44,46 on the zone 40 with further protection circuit.The minimum widith that note that raceway groove can change to some extent along with sheet material, thickness or other characteristics of single or multiple lift printed circuit board (PCB), does not exceed with present embodiment.When channel width is not enough, powerful electrostatic charge still may be in modes such as point discharges from 22 channelling of conducting metal face to conducting metal face 42.
But,, may make circuit select the earthed voltage on 20,40 both sides, zone to float if circuit selects the earth terminal in zone 20,40 not link to each other fully.Therefore the present invention further utilizes barrier element 80 to come the direct voltage of conducting conducting metal face 22,42, and the AC signal that gives way simultaneously through barrier element 80 significantly decays.Because the electrostatic charge that its moment produces in the static discharge process can be considered an impact signal (impulse), and impact signal can be decomposed into the high-frequency signal of many different frequencies on frequency spectrum.Therefore when circuit selected zone 20 to be subjected to influencing of an impact signal, this impact signal still can't be selected zone 40 to influence circuit by barrier element 80.Select zone 40 even if there is the fraction impact signal to arrive circuit by barrier element 80, it selects the influence in zone 40 also very faint to circuit.
In the present embodiment, barrier element 80 is that a Breadth Maximum is the printed circuit cable of 0.1 centimetre (mm), and this is because the thinner lead of live width is equivalent to an inductance to high-frequency signal, therefore can prevent effectively that high-frequency signal from passing through.Yet the Breadth Maximum of printed circuit cable also can change to some extent along with sheet material, thickness or other characteristics of single or multiple lift printed circuit board (PCB) among the present invention, does not exceed with present embodiment.In addition, but among the present invention barrier element 80 can also be the element of resistance, inductance or other attenuates high frequency signals of metallic copper, zero ohm.
See also Fig. 2, Fig. 2 is the flow chart of the circuit selecting method of anti-electrostatic discharging of the present invention.It includes the following step:
Step 100: beginning;
Step 102: the element that belongs to the input and output connectivity port in a plurality of elements is divided into a class, and other elements are divided into another kind of;
Step 104: one first circuit is set on a single or multiple lift printed circuit board (PCB) selects zone and one second circuit to select the zone, wherein this first, second circuit is selected the interregional preset distance of being separated by at least;
Step 106: select the zone to put the element that belongs to input and output connectivity port one class at first circuit, and select the zone to put other elements, and carry out circuit and select at second circuit;
Step 108: select the zone and second circuit to select the zone to lay a conducting metal face separately at first circuit respectively as earth terminal;
Step 110: select the conducting metal face in zone and second circuit to select to connect between the regional conducting metal face barrier element at first circuit;
Step 112: finish.
Note that the preset distance described in the step 104 is the minimum widith of raceway groove 60 among Fig. 1.
Generally speaking, the present invention utilizes raceway groove that the single or multiple lift printed circuit board (PCB) is divided into plural circuit and selects the zone, and the input and output connectivity port that will expose is separately positioned on different circuits with other elements and selects in the zone, to avoid other elements to be subjected to the interference of static discharge, utilize barrier element to select the earth terminal in zone to link to each other in different circuits simultaneously, float to avoid earthed voltage.Because the cost of barrier element is quite cheap and obtain easily, so compared to protective circuit that technique known is used, the present invention can save appreciable manufacturing cost.
The above only is the preferred embodiments of the present invention, and all equivalences of carrying out according to claim of the present invention change and revise, and all should belong to covering scope of the present invention.
Claims (20)
1. circuit selecting method that is used for a single or multiple lift printed circuit board (PCB) with anti-electrostatic discharging, it includes:
One first circuit is set selects the zone;
One second circuit is set selects the zone, wherein this first circuit selects zone and this second circuit to select zone at least one preset distance of being separated by; And
Connect one and select zone and this second circuit to select barrier element between zone, be used for the impact that decays and produce, and it is regional to avoid this impacts to select zone to be passed to this second circuit selection via this first circuit by static discharge at this first circuit.
2. circuit selecting method as claimed in claim 1, wherein this first circuit selects the zone to include one first earth terminal, this second circuit selects the zone to include one second earth terminal, and this barrier element is electrically connected to this first earth terminal and this second earth terminal.
3. circuit selecting method as claimed in claim 2 wherein is provided with this first circuit and selects the step in zone to include: select zone one first conducting surface to be set with as this first earth terminal at this first circuit; This second circuit is set selects the step in zone to include: select zone one second conducting surface to be set with as this second earth terminal at this second circuit.
4. circuit selecting method as claimed in claim 3, wherein this first conducting surface and this second conducting surface are the shop copper face.
5. circuit selecting method as claimed in claim 3, wherein this first conducting surface is electrically connected the grounding pin or the shielding pin of an input and output connectivity port, and this second conducting surface is electrically connected to the grounding pin of an electronic component.
6. circuit selecting method as claimed in claim 1, wherein this first circuit selects district and this second circuit to select the position, zone on the same wiring layer of this single or multiple lift printed circuit board (PCB).
7. circuit selecting method as claimed in claim 1, wherein this first circuit selects district and this second circuit to select the position, zone on this single or multiple lift printed circuit board (PCB) wiring layer inequality.
8. circuit selecting method as claimed in claim 1, wherein this barrier element is a printed circuit cable, and the live width of this printed circuit cable is not more than a predetermined live width.
9. circuit selecting method as claimed in claim 1, wherein this barrier element is an inductance.
10. circuit selecting method as claimed in claim 1, wherein this barrier element is a resistance.
11. circuit selecting method as claimed in claim 1, wherein this barrier element is a metallic copper.
12. but the single or multiple lift printed circuit board (PCB) of an anti-electrostatic discharging, it includes:
One first circuit is selected the zone, is used for that circuit is carried out in an input and output connectivity port and selects;
One second circuit is selected the zone, is used for that an electronic component on this single or multiple lift printed circuit board (PCB) is carried out circuit and selects, and wherein this first circuit selects zone and this second circuit to select zone at least one preset distance of being separated by; And
One barrier element is electrically connected to this first circuit and selects zone and this second circuit to select between zone, is used for the impact that decays and produced by static discharge, and it is regional to avoid this impacts to select zone to be passed to this second circuit selection via this first circuit.
13. but the single or multiple lift printed circuit board (PCB) of anti-electrostatic discharging as claimed in claim 12, wherein this first circuit selects the zone to include one first conducting surface, be electrically connected the grounding pin or the shielding pin of this input and output connectivity port, this second circuit selects the zone to include one second conducting surface, be electrically connected to the grounding pin of this electronic component, and this barrier element is electrically connected between this first conducting surface and this second conducting surface.
But 14. the single or multiple lift printed circuit board (PCB) of anti-electrostatic discharging as claimed in claim 13, wherein this first conducting surface and this second conducting surface are the shop copper face.
But 15. the single or multiple lift printed circuit board (PCB) of anti-electrostatic discharging as claimed in claim 13, wherein this first conducting surface and this second earth terminal are positioned on the same wiring layer of this single or multiple lift printed circuit board (PCB).
But 16. the single or multiple lift printed circuit board (PCB) of anti-electrostatic discharging as claimed in claim 13, wherein this first conducting surface and this second earth terminal are positioned on the different wiring layer of this single or multiple lift printed circuit board (PCB).
17. circuit selecting method as claimed in claim 12, wherein this barrier element is a printed circuit cable, and the live width of this printed circuit cable is not more than a predetermined live width.
18. circuit selecting method as claimed in claim 12, wherein this barrier element is an inductance.
19. circuit selecting method as claimed in claim 12, wherein this barrier element is a resistance.
20. circuit selecting method as claimed in claim 12, wherein this barrier element is a metallic copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510005770 CN1812690A (en) | 2005-01-25 | 2005-01-25 | Antielectrostatic discharging one-layer or multilayer printed circuit board and circuit selecting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510005770 CN1812690A (en) | 2005-01-25 | 2005-01-25 | Antielectrostatic discharging one-layer or multilayer printed circuit board and circuit selecting method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1812690A true CN1812690A (en) | 2006-08-02 |
Family
ID=36845276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510005770 Pending CN1812690A (en) | 2005-01-25 | 2005-01-25 | Antielectrostatic discharging one-layer or multilayer printed circuit board and circuit selecting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1812690A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105636338A (en) * | 2015-12-29 | 2016-06-01 | 广东欧珀移动通信有限公司 | Flexible printed circuit board wiring structure and mobile terminal |
-
2005
- 2005-01-25 CN CN 200510005770 patent/CN1812690A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105636338A (en) * | 2015-12-29 | 2016-06-01 | 广东欧珀移动通信有限公司 | Flexible printed circuit board wiring structure and mobile terminal |
| CN105636338B (en) * | 2015-12-29 | 2018-05-29 | 广东欧珀移动通信有限公司 | Flexible PCB Wiring structure and mobile terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7708912B2 (en) | Variable impedance composition | |
| EP2701471A1 (en) | High speed input/output connection interface element, cable assembly and interconnection system with reduced cross-talk | |
| CN101998754A (en) | Electrostatic discharge protective structure and electronic device using same | |
| TWI327803B (en) | Circuit for preventing surge, connector and electronic apparatus thereof | |
| US20050258842A1 (en) | Radiation detector for electrostatic discharge | |
| CN100544542C (en) | Prevent the printed circuit board (PCB) of static discharge | |
| JP6843312B1 (en) | Circuit boards and electronic devices | |
| CN103379727A (en) | Circuit board with electrostatic protection structure | |
| CN1812690A (en) | Antielectrostatic discharging one-layer or multilayer printed circuit board and circuit selecting method thereof | |
| US20060152869A1 (en) | Printed circuit board capable of resisting electrostatic discharge and routing method thereof | |
| CN110113863B (en) | PCB board with electrostatic protection function | |
| CN210670713U (en) | PCB with electrostatic protection function | |
| CN102740583A (en) | Circuit board | |
| US6600642B1 (en) | Method and apparatus for lightning suppression in a telecommunication printed circuit board | |
| CN100518439C (en) | Printing circuit board of anti static discharge | |
| CN107611716A (en) | The system and electronic equipment of antistatic | |
| CN103152975B (en) | The printed circuit board (PCB) of wall surface switch | |
| US6646888B2 (en) | Low inductance multiple resistor EC capacitor pad | |
| JPH08250891A (en) | Counter-noise component and its mounting method | |
| CN103369829B (en) | Digital protective relay | |
| CN113015314B (en) | Circuit board device | |
| CN2453639Y (en) | Static-proof type single panel device | |
| CN203181406U (en) | Printed circuit board of wall switch | |
| CN111315115B (en) | Implementation method for preventing secondary electrostatic discharge, circuit board and electronic equipment | |
| CN219876236U (en) | Antistatic circuit board and electricity storage equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |